News flash: Most people don’t want the responsibility of holding their own keys. If you don’t solve for that, any proposed upgrades to Bitcoin Core to encourage self-sovereignty won’t make a difference.

And that's what created the fiat system in a nutshell. Mommy mommy I don't wanna do it, I'm tired, do it for me mommy. Adults need to take responsibility over their own lives, giving their money and their other keys to third parties is irresponsible, simple as that

Most people don't want the inconvenience or friction. The UX for holding keys has improved drastically over time. Same with email and WiFi. Strawman argument. This is like saying no one will use the internet because dial up sucked. The UTXO limitation is technical, what you describe is social.

don't conflate the argument of 'will they' with 'can they'. Two separate issues.

Speaking of lazily ignoring questions.

Yes because it is infinitely divisible. There is nothing in the code that says you have to stop at 8 zeros.