I think it's completely legitimate (not necessarily the music, but the launcher has enough issues). I'm not sure why we're expected to put up badly designed software just because at some point we get to play a good game. I will absolutely give a game a bad review if certain parts of the on-boarding experience are terrible. My most recent one was Fallout 76, where all the problems getting the game running in the first place drained any interest I had in trying the game and at least giving it a chance.