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.
I think it's a pretty bold statement to claim that the Internet today is worse than it was 20 years ago before things were being monetised.
People still do stuff just for the sake of it. To be fun, helpful, whatever. However to expect things to just be done for us out of the kindness of people's hearts I think is bordering on entitled.