I have 60+ years of English as a first language, a library of several floor to ceiling bookcases and no, it definitely does not say that the killer is MAGA.

It's a classic deliberate line skate but it clearly states what the "MAGA Gang" is asserted to have done without actually claiming the killer to be be part of that "Gang".

It wouldn't pass muster in an English libel Court and it's a milquetoast sentence in the US first amendment free speech world.

Further it is a bald matter of demonstrable fact that multiple voices that could be characterised as "MAGA" were indeed making numerous assertions about the killer and their motives before any facts other than the shooting itself were known.

This makes the Kimmel statement little more than a dull piece of observational social commentary.