Obviously, there is, as the terminology is widely used.
It is obnoxious to take a dating system use the work and then pretend that the people who originated the system never existed.
There is a perfectly reasonable explanation, given by others on this thread, why that terminology is used. Your being offended by it doesn't change that people are going to use it. Seems a rather trivial thing to get worked up over.
It's plagerism.
Words mean things. Whatever you want to call this, "plagiarism" doesn't apply.
I know why CE/BCE was created and that doesn't change the obnoxious character of it's use. The Chinese don't believe in Christ either but they don't pretend the Gregorian calendar doesn't exist when using it.
I was taught that failure to acknowledge the work of others was a form of plagiarism.