You are not great at logic and analogies, are you?

Well if there can be good tenants and bad tenants, surely there can be good landlords and bad landlords, or is that not possible, all of them are automatically evil?

All of them do earn money just by owning property. I’m not calling that evil or good or bad. It is what it is. And I’m sure many landlords are nice enough people. I am against it though.

So by that logic, VPNs and Bitcoin should both be illegal because they can be used by criminals (even though they have legitimate uses too) because the underlying mechanism is the same

I’m not even sure where to begin. Neither of those, VPN nor Bitcoin, allow you to earn money simply by owning property. Both of them can be used legally and illegally, but that has nothing to do with landlords which are always able to rent out their property completly legally but are still always being a parasite. I’m not saying renting should be banned because one kind of landlords are evil and the others aren’t. I’m saying the mechanism of profiting off of property while exploiting the need for housing puts all of them on a spectrum between siphoning off a little or siphoning off a lot of the workers income.