GH
A few points.
1) I assume you are referring to the “prayer service” that took place at yankee stadium on 9/23/01. That was clearly different than thsi event which was an embasssy opening .
2) BH there are many yidden with varying opinions just because people get broigas. Doesnt mean they are right. I’m sure some will criticise these Rabbanoim too. Thats ok there is room for machlokes (as long as its leshem shomayim of course)
3) You say “.several big rabbonim” particiated in that event (though I believe you are mistaken) clearly they (if they exist) held that event was ok too.
4) In your OP you asked “Was anyone bothered” Yes I was bothered (though I do not recall anyone mentioning the actual name, just “messiah” perhaps I wasnt listening closely, and it might not be a big distinction) But being bothered doesn’t make it assur