Mastodon IS better ... at not stuffing ads in my face. So it's not the same noise as Twitter, in that I don't have to share a home with a billboard in every room.
The appearance of ads is not the only metric that matters for people. The fact that no one is yet apparently spamming or otherwise attempting to profit from Mastadon is more a reflection of how little it is currently used, rather than something inherent to the service.
