Do you have some examples? I am still a bit sore from my adventures as a creator on Viddler and Dailymotion.

I would point to platforms like Curiosity Stream and Nebula, which are creator driven. Though I would not exactly call them Youtube replacements, as they are more just platforms designed for supporting specific creators more directly (akin to Patreon). These platforms are often advertised as in-video sponsorships, so going back to the original point, I do think creators would be very vocal if such ads were banned.

Kick is one that's been poaching big names lately. I've also seen people starting to stream on X and Rumble.