No, the 'hot' in 'hotfix' originally (as used by Blzzard with respect to World of Warcraft back in the mid-00s) referred to a server-side only change that didn't even require players to log out and back into characters, let alone restart their client, or even worse exit, download+apply a patch, and then re-start.This is incorrect. It is by its very nature, a hotfix.
Frontier's abuse/misuse of the term 'hotfix' dilutes any meaning it has beyond "we're changing something". If you used 'patch' for any time there's a client download, and reserved 'hotfix' for (at least, even if requiring player relog/restart at most) changes only on the server side, then both terms would convey extra information.