Yes, people can tip you LBC for your videos. The Lbry team also pre-minned some 100million coins or something for giving away and helping LBRY grow. On lbry.tv they give away some of these I take it for you being active there.

One big guy, EEVBLOG, talking about electronics, says he gets more on LBRY than on Youtube nowadays too (at least per watch).

https://lbry.tv/@eevblog:7/eevblab-85-youtube-tax!:4

I really like what I've seen so far and https://odysee.com/ is a really nice frontend too (it's using LBRY as the backend)

Donald Trump hasn't joined as far as I know.

I can see this take off for sure, as a nice alternative to Youtube.