"but the gentiles converts certainly weren't required to
Agreed. But we were talking about Israel."
The gentile converts are made sons of Abraham via the spirit of adoption; we are Israel too...what affects them affects us...therefore the gentile converts should have been required to sacrifice at the temple too, if that is what you are asserting?!
Put that on hold for the moment, look at the passages I've given you, and get back to me with your thoughts on them.