I know very well what a hacker event is and how it unfolds. Been on stage on few, helped as volunteer on some. IMHO - Generally this all manifest in a very similar manner to some communist movement. I’m not saying that it is bad to contribute to some idea, not even saying communism is bad. I’m just saying that there’s certain amount of hypocrisy in this scenario, you can downvote me as much as u want, doesn’t change the fact.
It is one thing to throw a party for 20friends and another to have FOSDEM sized gig. Such events are not presented in open ground in some forest by people shouting loud (been to such also, although for music). So they have cost - for venue, internet, electricity, screens, typically some food, drinks etc. As a presenter I have a cost for flight, accommodation, food, etc.
Someone pays the bill. Not for profit still has bills to pay. If you don’t pay deeds with cash, there’s some other value exchanged.
So why not support these people who contribute? What’s wrong with that, sorry I’m not getting it. Besides students very often participate by moving boxes between rooms, because for jobs that require responsible actions one needs an expert. Being a student I’d rather want to participate in something that actually teaches me something, but at the end the best I can hope for is to get to know some famous folks. But I can also do it as a visitor, right?