Discoverability is a problem. The average hobbyist website has no chance of making it to the top of the pile of search-engine-optimized trash websites that are returned by search engines. For example: Quora often takes up half of my results these days.

…and if the hobbyists know that their sites aren’t going to get any visitors, there’s little reason to make them in the first place.

If we just ban all advertising then there are no more SEO optimized sites trying to get that ad-revenue. So hobbyists should have no trouble with popularity if the ad-supported internet goes away.

hobbyists who may one day want to have a lifestyle out of this wouldn't benefit. And those would be the sites that have a reliable stream of content instead of maybe a burst of content for 2 months before getting bored or burned out and maybe making a piece of content every 5 months afterwards.

For all the negatives, a consistent stream is one of the biggest benefits from professional content creators, be it traditional news, Youtubers, streamers, or even bloggers.

Nothing! And I do use a lot of them personally. I pay for several creators on Patreon and subscribe to a few creator-owned website publications to encourage work I care about most...

These are not mutually exclusive things, sorry if I implied that.

My point was more about the race to the bottom with commercial content sites/networks/publications in what seems like a borderless space, with increasingly bad incentives to draw in users.