You cant give in...thats why. you become just as bad as them.
Think about that mindset...they cheat, so I may aswell too.
Then you think about maybe they thought that same way...
then whats stopping the entire player base from just cheating...completely de-valuing any sort of rare pokemon and making the entire game meaningless and unsatisfying.
Basically...
Go out and earn a Tyranintar by grinding for hours, walking with buddy, and getting some lucky hatches. And you will love it 100 times more than if you just teleported and caught it.