American is not scientifically and technologically stagnant. They are not moving as fast as China granted but the rest is conjecture about their progress. They've gone all in on AI which is extremely foolish especially with their AI industry being powered by Chinese nationals and Chinese Americans who could easily turn tail and give China the shortcut if America ever does even get to AGI/ASI. In other fields they are still moving forward despite the gap being enlarged by China.
So you agree. Scientific innovation is all relevant. No, they're not stagnant in the absolute sense but innovating slower than your rival is essentially walking backwards in a competition.
The finish line here is defined as the line where you achieve the ability to completely overwhelm the other in such a fashion you basically can stop the other's development. E.g. China vs US in 1950s before China got the nuke. There are greater technological horizons in humanity's future.
Alternatively, the chasm between the two could be made so wide it is equivalent to passing "the finish line".
Then we're not nearing the finish line but separating from it because we have left American global domination and are not within sight of Chinese global domination. The finish line is relevent to your enemy and even then, it's not an actual finish line because the US had it in the 50's then lost it and has to keep racing?
Of course we are not at the point of defeating the US in their own back yard. The US used to have this over China though. While this is no longer the case and the balance between tech/capability and quantity may lie somewhere around the second island chain, China is far from building up enough of a naval overkill where US backyard (second island chain equivalent) can be militarily controlled by China.
Yeah, that's what I said.
It may be a western specialty for Machiavellian tactics and deceit but China ought to get upskilled here too. There is an abundance of people and resources to begin. It might come useful in future.
We don't have those tools because the structure of the world was built to give the US that advantage after WWII. It's foolish to fight there; best to invest in other areas where victory is more likely.
Isn't it better to hit back and absorb damage than to only absorb damage?
It's better, but when undoable, it's best to use your strength to hit your opponent's weakness rather than retaliate with your weakness when he targetted it with his strength. For example, when the US attacks Venezuela, it would be foolish for China to send aircraft carriers to try to save it. Rather, it would be much more effective to impose humanitarian sanctions on the US, further depriving it of rare earths.