It's not up to you to decide whether or not people express opinions about whatever they please, and frankly that sentiment comes across as deeply arrogant and unpleasant. if that's the tack you want to take you can continue this discussion with someone else.

> The term was very specifically "Continental Europe".

And "continental" in Europe very often is just used as a "but not the UK" modifier.

You can argue about the correct meaning all you want, but it is entirely irrelevant to whether or not that is how it was actually being used.