http://i57jbsj7eainn7yzg3vgx2xjj7nwkbpgvrtxcq5lmcjdsja23pydfbqd.onion/pol
Especially since Belorussia already had plenty of languages - Polish, Lithuanian, Russian and aforementioned West Russian aka Ruthenian. The popularity of yet another language is debatable, given it's political nature and indeed all those you've mentioned are political activists, not some peasantry. >>65 Belorussian lands were part of the original Rus though up until it's destruction and always had relation to the actual Russia.