I was always on the side of 'Why does China need long-ranged bombers and nuclear attack submarines" camp until someone on a different forum, an American of all people, actually changed my mind on that. Even if China fights a war in the near-abroad with the US and annihilates all US bases, sinks literally their entire carrier fleet, and reigns supreme over Asia, that doesn't mean China wins.
That's completely clueless then. As China pushes up, they will also extend their own range by placing assets in the newly liberated areas.
The US might continue to twist Europe, Africa, or South America's arm or sanctioning them to stop dealing with China
Hello, unrestricted bombing. By sanctioning China on behalf of US after an unprecedented American aggression, you enter the war on US side. The Xinjiang to Europe distance is not further than the middle China to Japan distance.
So if US tries to invade, loses a ton of assets, let's say they arm twist Europe or Africa to sanction China, well, are they gonna provide AAMs to defend those countries? How will they get sufficient numbers of AAMs while at the same time preventing a mobilised China from breaking through towards Australia/Hawaii?
Also, for the strikes that make it through, US will need to replace infrastructure in those countries. US can produce enough generators, water filters whatever for Europe, Africa and later South America and also has the shipbuilding to ship them to co-aggressor nations?
And remember at the same time China will arm twist other countries to let their forces through, especially Russia and fighter bases. So there is not only airstrikes, but also SEAD. Especially from super nasty threats like J-36. So that means US needs awacs, anti stealth radar, F-35, B-21 in full air support outfit deployed in those countries to prevent China from just freely destroying the AAMs (and also ports, ships where US affiliated vessels are docked). These assets in turn require even more defenses, like THAAD and Patriot, because otherwise once the B-21 or AWACS is on the ground, a random DF-26 can just kill them. These are all very bad trades for US, all these assets should rather be on the front and preventing China through breaking through, not defending some hole in Europe.
or even sending strike aircraft to sink commercial ships owned by or associated with China.
This proposal also completely makes no sense. By doing it, they would be directly attacking Chinese civilians. China will attack the hosting nation's civilians back in a disproportionate way. 1000s of seaborne drones into their ports, sinking their commercial ships in Asia, and just like above, unrestricted air campaign that Washington needs to fully bankroll defenses for.
By having the ability to strike all over the world, importantly the US mainland, China will gain the ability to impose costs on the US and at least coerce a more favorable end to the war on their terms. Without systems like the H-20, probably heavily supported by the J-36, China will lack initiative and will need to wait for US conditions and politics, passively, to change in their favor. This might take decades to happen, if they happen at all. H-20s means China can force the issue and, if nothing else, can damage US ports, airbases, and potentially even factories or the powerplants feeding them in a much more protracted war. It grants China much more parity compared to a situation where Chinese cities and factories are held at threat whereas the US heartland can remain virtually untouched as they were by earlier wars.
Did US wait with replying to Pearl Harbor until having a bomber that can reliably hit Imperial Japan heartland? Did Germany wait with Barbarossa until they had a bomber that can consistently hit Siberia??
This trope is arbitrary cope by US nationalists in denial that starting a war against China would be a monumentally bad idea. "As long as China can't bomb the west coast on day 1 as hard as they can bomb Japan, China won't dare to go into a war" this is complete cope and even dangerous delusion. Or even more ridiculous saying that fighter escorts like J-36 need to have ranges that reach CONUS to be an effective deterrent to US.
Newsflash: wars are fought along capturing territory, whether land offensives or island hopping. J-36 et al are meant to aid those tasks by seizing full air control, which means initially operating close to China and then slowly expanding out as more territory gets liberated, not as some sort of ridiculous "America bomber + escort" that is an arbitrary delusional requirement set down by coping Americans.
If there is a day where on day 1 H-20s/SSNs/CVNs/6th gen can go directly above west coast and wither them with strikes, that's not a day US and China reaches parity, that's a day where the power balance become like between India and China.