Cosplay Lolita vs. Theme Lolita.

I found myself talking about this a lot due to recent conversations that have come up on Rufflechat and among friends. What are the differences between cosplay lolita and a themed lolita coordinate? Are there even any to begin with? And finally, are the official collaborations between Japanese brands and anime series evidence that cosplay lolita is very much a thing?

This is purely an opinion piece, and I can't guarantee that everyone would agree with me, nor can I urge you to subscribe to what I believe, but I thought it would make for an interesting discussion!