Firstly, anyone complaining about the name "Jehovah" should also complain about the name "Jesus" as Jesus wasn't even his name either. His name was Yeshua.
Secondly, Jesus is only a central figure in one part of the Bible.
Thirdly, just because the JW's don't view Jesus as equal to God like trinitarian Christians do doesn't mean he takes a back seat. They literally call him the "Greatest Man Who Ever Lived." A disagreement about one fictional doctrine versus another fictional doctrine does not mean JW's are any less Christian than the church down the road. It's the very definition of the No True Scotsman fallacy.
(Disclaimer: I do not consider myself a Christian or even a believer in the divine, although I do believe Jesus was a real person and the sermon on the mount was a great representation of a Judeo-Buddhist hybrid philosophy.)