For about 20 years most everything was supported on nothing but some person's own desire to put themselves out into the world. This meant spending out of their own pocket if necessary. If hosting became too much of a bandwidth issue for them to be able to pay for hosting they would release it as a torrent and it would become shared and distributed peer2peer or they'd throw it up on a free file share and the it became the file sharing platform's problem to deal with the bandwidth and try to collect (typically through member-only "premium download speeds").
In the past 10 years or so quality has largely gone down and annoyances like ads and sponsor shoutouts have gone up to the extent "Sponsored by Raid: Shadow Legends" is an actual meme. There are very, very few content creators I feel are worth supporting. This ends up being a bit classist as mostly people with enough personal cash flow and free time can afford to become full-time content creators but by and large that's already kind of the case if you look at the people who become full-time content creators. But I personally feel that if your content is more of the "popcorn" variety that people use to fill their day but don't actually value compared to something people do value then the world at large isn't missing out. If enough people felt they would miss out - they'd pay to keep it around.
There are plenty of content creators I watch where I would not be all that sad if they vanished and they stopped creating content - because I use their content to fill gaps of boredom in my day and not because I place any significant value in their content. Then there are a few I absolutely do value and I already support them when possible. I assume ones without a method to directly support them are OK with losing some revenue to ad-blockers and the like. I have absolutely let personal opportunities of collecting cash slide past me because I weighed the effort to collect it to be greater than it was worth so I assume the reason they haven't opened up a way to donate to them directly is for similar reasons.
I consider ads to be psychological warfare and something that should (but never will) be illegal if they are designed to be emotionally manipulative in any way. If a dry, boring informercial doesn't inspire you to buy their product then it probably isn't worth buying howdy. I feel absolutely nothing bad about blocking them.