> To circumvent the fake title/bait & switch practices, you could allow users to flag videos as misleading, vote them as spam, etc. Put the number of flags next to the video, add the ability to not even see flagged videos.

And who would flag the bad users?

This just increases slightly the discomfort of bad guys, but does not prevent it at all. Instead they will flag competitive videos and such.

Nobody has solved "decentralized trust" yet, if ever.