People being mad at youtube for trying to force people to pay for the insanely expensive service they are providing was/is strange to me, on a similar note.
For FOSS, it’s sort of given in the name though. If it’s not free, it wouldn’t be FOSS, and companies like Google and Facebook have permanently destroyed most people trust in ads not also being paired with data harvesting. Other than offering paid tech support, it’s difficult to find a non intrusive way to get money.