Mcdavid is a freak who stuck it out. But that was after dumping guys year after year and picking high. Mcdavid and Drai would make any team in the league a cup contender but still had issues for how many years?
You can keep trying to dumb it down and cherry pick all you want, but you see it across every sport and every industry. When shit is bad, a lot of good people tend to float down to the level of everyone around them. Not skill wise, but in compete level, effort put into practice, or getting better at whatever it is they are trying to do. There are a lot of people who can break out of that, and you can bring people in to be better examples, I don't know how you could dog a practice with someone like Jagr on the team and feel good about yourself for example.
Am I saying if we don't win a game the rest of the season we are screwed forever? No, but it is something to think about and recognize.
I'm not freaking out and saying we are doomed, just having a discussion about something, and because it's the internet and you lean towards it not mattering you need to ignore it completely like it's some folk lore just to make a point. So we are all set here.