I only block communities for now. And my instance blocks a lot of … debate heavy instances.

Regarding blocking of individuals: feel free to do that, if it helps you having a better time, that is perfectly fine.

But I started tagging strange people if I think that something they said is not correct. Then later I randomly see them somewhere else behaving normally. So my current plan is tag them first to see if I find this one person repulsive again and if so then block them. This way it is less carpet bombing and I accept that everybody can have a bad day where they lash out.