Estonian here. Soviet period was very problematic, and if you claim here that criticism of communism is fascism, then you are greatly mistaken. The crimes of communism during the Soviet period are well documented. E.g. https://en.wikipedia.org/wiki/Soviet_war_crimes To point out that many Russians are longing for communism is quite possible, but these are the same Russians who are currently “liberating” Ukraine.
They are mostly Mozilla members, not Ubuntu members, who are responsible for the PPA. Are you sure, that your complaints and grievances are directed to the right address? See here: https://wiki.ubuntu.com/MozillaTeam/Contacts