on layer 1, with the introduction of ordinal, now bitcoin's blockchain is getting bloated with useless jpegs, nfts, and it could possibly become worse:
Already possible without Taproot, see
http://www.righto.com/2014/02/bitcoins-hard-way-using-raw-bitcoin.html?m=1.
Also, I think these kinda of softforks should not happen anymore. Only forks that fix bugs, fix vulnerabilities, enhance security, but not forks that "add cool features".
Since the only alternative to implement new feature is hard-fork, i doubt people would support this idea.
Bring stablecoins (aka, shitcoins, fiat coins) to LN goes against the purpose of Bitcoin.
LN isn't exclusive for Bitcoin cryptocurrency.
Developers have already started submitting proposals to censor the transactions they dont like and some are supporting it.
Source: https://xkcd.com/285/