Mephistopheles
First Post
I think the rationale behind Mearls's position on this may be thematic rather than rules based. There are some monsters that have grappling as their thing: these monsters can grapple as part of their attack actions and can use those attacks as part of their Multiattack routines (for example, chuuls, chain devils, ropers, or shambling mounds which grapple and then engulf only if both attacks in their Multiattack hit). Perhaps the intent is to have grappling associated with certain monsters in a thematic way, rather than every fight turning into a grapplefest?
Having said that, I don't agree or disagree with either interpretation; go with whatever you prefer.
Having said that, I don't agree or disagree with either interpretation; go with whatever you prefer.