I take ‘remainiac’ to describe someone who voted remain, supported efforts to challenge to legality of the vote, and now seeks to rejoin at the earliest opportunity?
Given that the whole thing has turned out, as expected, to be an unmitigated disaster - to the point that British industry, haulage, farming and fishing are all on their knees, and low income families are struggling to feed themselves and heat their homes - I for one welcome being badged as somebody who was right all along.
Using it, believing it an insult, just marks you out as an utter moron.
Goodness. How very right you are
Sad, though, that we have come down to having to tell the disdvantaged that they have disadvantaged themselves, and unfathomably plan to carry on doing so.