New Spells in Strixhaven

[Amnestic]

There are numerous ways to include extra monsters with a reasonable excuse to be there.

Sure there is, but that's not the point. The point is that the fantasy of a single big [dragon/devil/archmage/whatever] boss vs. the party is a classic one and has been for multiple previous editions before. You can 'fix' the issue with mooks, but that's not the same encounter in vibes.

I mean, this:

Spoiler

Show

Is the art that they chose for their cover of the official art+history book released a few years ago. One big dragon, one big hoard. Saying that players wanting to fight a single big boss is "videogamey" seems silly, as is saying "well you can just add mooks to the fight" - that's not the point.