Exactly. In addition, none of the vehicles in those pictures actually look like TELs. Sure, the cab layout looks a little similar, but remember those fake IRBMs NK showed off a little while back during a parade? They bought the transports from Chinese civilian companies.
If you wanted to and had the money to do so, you could go and buy yourself one of those exactly same superheavy trucks and paint it green. But adding a big cylinder to it does not make you a nuclear power.
Not every such superheavy truck with a large diameter cylinder on it in China is carrying an ICBM, otherwise China would have missiles to rival the Russians and Americans.
Do you actually see any sort of police or military escorts anywhere in those pictures you posted? A single person in uniform?
The fact that you have guys in jeans and trainers and other civilian clothing milling around, with the doors to the cab open would suggest those civies are the drivers and crews on that rig.
There is lax security, but there is zero security in those pictures you posted, which is a clear sign those trucks are not TELs, and what they are transporting are not missiles.
Those pictures just show trucks carrying large cylinders, which could be anything from a section of prefabricated tunnel, to specialist machinery, to the legs of oil rigs or wind turbines or any number of things.
That, incidentally, also shows how hard it is to find ICBMs in China - there is so much general civilian and commercial activity involving superheavy trucks that you are likely to get a hello of a lot of false positives.
As for Ultra's fanciful (to put it politely) plots about ambushes or bombs, well, lets just say that would be unrealistic even for the movies and does not warrant any more of my time.