GPA is exactly what it says on UCSD acceptance letter

I was accepted to UCSD as a junior transfer. On my portal it says that I have to maintain a 3.00 for my offer to be valid. If my Overall GPA turns out to be exactly 3.00 at the end of the semester, will there be a chance that they may rescind my offer?

No, you have met the requirement but aim for higher grades if possible.

A 3.00 is a 3.00. Why would they rescind your offer if you met what was required?