Not all ads are invasive soul seeking tracking nightmares
Ads are ads; it doesn’t matter if they are “good” or “bad,” unless you want to watch them like most people do because they don’t mind or they don’t know how to block them.
no, there are not “many ways” for content creators to do that full-time.
If they do not get the engagement or funds they need, they will either paywall or find other ways to support themselves; or they will just not make it on YouTube or streaming, like many people before them, unless they continue to fight on while learning and failling.
This reminds me of some small business talks; it is a harsh capitalistic world; you give up or keep trying.
I still say grassroots funding and support is the way to go if they are just doing it for the hobby or for what they believe.