The term Never-Trump was coined to describe so-called conservatives who vowed never to vote for Trump. It wasn’t coined to stop conversation, but to accurately describe people who claimed to be conservatives but who actually preferred Hillary to Trump. It is still an entirely accurate and useful designation. There is a profound mental deficiency in anyone who claims to support conservatism but whose actions supported Hillary.
I don’t think your definition of a NeverTrumper is accurate. I was NeverTrump in the primaries, but even I concede that Trump is/was preferable to Hillary Clinton. So maybe this definition of yours paints with too broad a brush?
So does that mean all those who voted for mittens and McCain to “beat the other guy” are or were Never conservatives?
Or how about those that sat out those elections as a form of protest because they wouldn’t vote in a non conservative?