Thats a cope. Russia could import food, they could use reserves. 2014 Ukraine dont have a chance.These Western sock puppets in Ukraine did not mind losing privileged access to their largest trading partner i.e. Russia by signing the association agreement with the EU. As long as they personally profited it did not matter to them that the country of Ukraine sank.
By signing the association agreement with the EU Ukraine agreed to stop their existing highly advantageous trade agreement with Russia. Because part of the way EU association agreements work is that you cannot have preferential trade with anyone else, you cannot enter into any beneficial trade treaty which the EU is not itself a part of.
Back in 2014 the Russian Army simply did not have the numbers to properly invade Ukraine. You could argue they did not have the numbers in 2022 either. So they just annexed Crimea.
In 2014 the Russian Mir card and SPFS did not exist. Russia was still dependent on imports of food from the West.
A full invasion of Ukraine by Russia in 2014 was simply impossible.
At best what Russia could have done would be to support the existing Ukrainian government much like they did with Tokayev in Kazakhstan. But for that the Ukranian government had to ask for a Russian military intervention which they never did.
In the meantime Ukraine since 2014 trained an army several hundreds of thousands strong. It is basically the second largest army in Europe after the Russian one. So it is not like this is an easily winnable conflict for Russia.
But with hindsight maybe 2022 sanction strengthened Russia socially. The sanction alone was worth the wait.