There is one single thing that can a disproportionate effect on Bitcoin adoption that will ultimately make Fiat money obsolete: network effect.
Bitcoin needs network effect, the more the better. Shitcoins and stablecoins are an attack on that network effect.
If shitcoins suffer, even with attacks from the State, and that contributes to increasing the network effect of Bitcoin, that is a good thing that will ultimately have good consequences for the world.