There's plenty of speech which is non-political, non-substantial, has little or no intrinsic value, and I'm simply not interested in reading it. For instance if

There's plenty of speech which is non-political, non-substantial, has little or no intrinsic value, and I'm simply not interested in reading it. For instance if I wake up one morning and feel like telling you that you're a piece of sh*t because I'm just not a fan of fruit jams, you have no obligation at all to accept my message. This isn't really spam it's just me being a troll and a dickhead. If you argued that certain people in 2018 are too thin-skinned and characterize everyone as attacking or oppressing them I'd agree, but we still need filters to deal with legitimate abusers.