@tengo You should be aware that Gab is gaming the fediverse using bots and other techniques to pollute the statistics. For some reason they seem to think SEO is useful.

Purism is not, itself, blocking Gab. Their app is a fork of Tusky, which is one of many which have chosen, based on the #ToleranceParadox, to block people logging into Gab.

You can read a bit about the Tolerance Paradox on en.Wikipedia: https://en.wikipedia.org/wiki/Paradox_of_tolerance