That could be the case but I don't believe that they're going to let them in without a lengthy process to confirm that they're not in any way shape or form on the side of the enemy, plus there's a lot of Russian soldiers that are defecting to Ukraine right? Which means that there's a possibility that some Russian IT people might also consider defecting but now that I think about it, it's unlikely that they would since they're not in the frontlines. Also, wouldn't the people that are running this Telegram group be having some way to filter out who should be joining and who shouldn't, they'll probably even have to make you download a keylogger or maybe even reveal your identity or address so they can confirm that you're not serving on the other side of the fight.