I hate it. It is so frustrating when you run a published adventure and you decide to trust the designers to do this right, and then as soon as the door opens, you realize that they can’t possibly have tested this.
But yeah, why would large creatures ever live in a place that is just too small for them? It doesn’t make sense.
In some situations on Roll20 you can make the squares 10’, and that can solve some problems, but everything else on the map then doesn’t make sense. Stretching the map and using double the squares can sometimes slow the whole thing doen if you use dynamic lighting.
It’s rough man…