I understand the intent, but elastic has proven to create legal confusion despite being warned against it and then sue over it in the past when they mixed the APL source and the x-pack source under two different licenses in the same repo and then sued floragunn over copyright violations. They might be technically correct on that lawsuit, but IMHO they knowingly created that situation.
I’d not say “intentionally” as I don’t think that this was the motivation behind the change. I’d consider it “knowingly” - they were or at least should have been aware that the change was going to create confusion about the license that individual code parts and changes were under. It was pointed out at that time.