I've never used it

Seems pretty legit to me - especially if they show up on-chain

My only question would be, what's their incentive?

Every other platform I'm aware of that gives away sats has a trade-off. Like ads, data, spread on fees, etc.

Hey brother all good man 💯 it's a project I've been in for over 1 year and have had huge success..

like all Bitcoiners I just want to share the wealth and spread the word ...