I don't think it's a matter of over-caution, maybe just some figures work easier for removal.
My BR heads take the adapter off with the head, had to use heating to pop out the adapter. I got a spare adapter so it's a non issue now, but if I didn't have that I'd have to heat for swaps. First Joker figure head almost comes off too easy, and my Two-Face adapter doesn't want to come off the body at all so head swaps are easy there. Something with BR Joker heads complicates things.
My BR heads take the adapter off with the head, had to use heating to pop out the adapter. I got a spare adapter so it's a non issue now, but if I didn't have that I'd have to heat for swaps. First Joker figure head almost comes off too easy, and my Two-Face adapter doesn't want to come off the body at all so head swaps are easy there. Something with BR Joker heads complicates things.