Why the hell not? It's part of Trek's DNA. Might as well complain about aliens being in the show.I have to say I liked season 1 a lot more than season 2. The only episodes I had fun with were the Lower Decks crossover event and the musical episode which at first I thought "fuck this is stupid" and then got into it.. By the end of that one I loved it.
Oh time travel again.... Must every trekkiverse show do this?