Why did you and your graduate friends think an insanely rich man with a huge number of staff needed your financial help in testing transactions? This reminds me of those people that fall for celebrity love scams, where a rich celebrity needs their money - just baffling.
Its been a while, but I remember seeing streams for Elon offering to "double your bitcoin" and the reasoning was he wanted to increase the adoption and load test the network. Just send some bitcoin to some address and he will send it back double!
But the thing was it was on youtube. Hosted on an imposter Tesla page. The stream had been going on for hours and had over ten thousand people watching live. If you searched "Elon Musk Bitcoin" During the stream on Google, Google actually pushed that video as the first result.
Say what you want about the victims of the scam, but I think it should be pretty easy for youtube or other streaming companies to have a simple rule to simply filter all live streams with Elon Musk + (Crypto|BTC|etc) in the title and be able to filter all youtube pages with "Tesla" "SpaceX" etc in the title.
Obviously, if it's coming from their official channels the "signature" can be more obvious, but a layer that facilitates this could do a lot of good imo.