I think that it's fair that people criticize the game, especially since we have spent so much time with it now. As many of us have played the game for months now, we now have a much better idea about the pros and cons of the game. This game isn't cheap, and neither is the Switch. So long as people are being respectful about their feedback, of course. Hopefully, Nintendo will be able to take into consideration for future updates or for the next game!
After all, if we don't voice our critiques about the game, how can Nintendo have a chance of taking them into account?
And before anyone asks: no, I haven't time-travelled in the game. No, I haven't spent 24/7 on the game, being a full-time student for much of the game's release. Full disclosure, I've played around ~245 hours.
Even if someone does time travel or spend lots of time on the game, their opinion is absolutely valid as well.