I've seen a lot of posters say things things like "I don't allow homebrew at my table" which has always made me wonder where they get all their NPCs and locations from. I'd bet they don't all come as-written out of official WotC publications. I feel like some people use homebrew sometimes to talk about player produced rules alterations and don't apply the same term to what the DM does (which is essentially wholesale hombrew all the time).Yep. The definition of reskinning that I would use is when appearance and/or flavour is changed. If mechanics are changed, I'd consider that homebrew. However I most certainly would not regard "homebrew" as being a perjorative.
All this just to try and clarify the terms we're all using.