I see this opinion often. I hold it myself. But I don't know how to have individuals hosting zero maintenance secure platforms. The amount to learn how to do a community administration is both difficult and obscure.

The normal used to be hosting a phpbb forum and moving on. Now that doesn't seem feasible to protect from bad actors.

I have a webserver I admin and I found a crypto miner happily running away on it one day. I still have no idea how it got there.