"that is what I guessed, it is to make everyone feel supportive and patriotic. "
Actually I don't think that is the idea either, or rather I hope not.
I think it's to emphasise Russia's isolation by banning anyone who might be seen to be representing the country in an official capacity, be it sporting, cultural, political etc etc.
And although these players are not part of a team in a team competition they repesent something the Russian state and people can identify with and support - especially in the absence of much else!
I don't think it's possible to overstep the mark in this regard.
Lay off ordinary Russians certainly.