Not true, try to selfhost your own and you will see his much it eats just to chat with it. Using just 3b model eat like 200 watts of power. Use it for an hour an you are eating as much as some laptops eat in a day while surfing. Of course if you are compare with gaming, it may be comparable with heavy games but then again that is also using a lot of power.

I live by rule “if everyone gave me 1 euro…” so I donate 1 euro/month to projects I use often (but I send actually 12/year to spare the devs some trx costs) and 1 euro/year to projects that I use sometimes (again I send 5 Eur/5 years actually). I use almost only open source and I haven’t yet paid everyone. I also recently made an open source application where I didn’t setup any donations channel, I simply like doing it… Maybe in the future if I have more work on it, but not now…