Metroid Prime is a rip off of Call of Duty. 30 minutes into the game and I'm like "this is Call of Duty.."
Super Smash Bros is a rip off of Street Fighter. 30 minutes into the game and I'm like "this is Street Fighter.."
Jak & Daxter is a rip off of Spyro is a rip off of Crash Bandicoot is a rip off of Mario 64 is a rip off of Super Mario World is a rip off of Pitfall
I mean, I could understand how you think it's similar, and that's just the evolution of game genres of standards for developers to meet in the creation of these games that adhere to said genres. But do you think it's a bad thing? If I had tons of fun doing something in one game, it'd be amazing, to me, to do it in another game.
Undertale is a rip off of Earthbound. I'm not even trying to add another example to above, this is something many people agree with, and the developer even said it was heavily inspired by it. But that game was great for many, and Undertale builds upon those same things and is a fascinating and original game, despite all the comparisons to it.