The fact that there is a conversation like this going on here is horrifying.
This is not about taking a ruler and measuring if the sins in this specific even were harog v'al yaavor, d'oiraya, or "only" d'rabonon. This much more serious.
This is war against Hashem and his Torah! All-out war, with the single objective being to normalize these sins and to destroy all moral value in the frum community. In war, you don't sit back and start making nuanced cheshbonos. There are no justifications here.
בשעת השמד אפילו על מצוה קלה יהרג ואל יעבור
This is war, and there is no place for sympathy or judging favorably. There must be a united, unambiguous condemnation for these despicable people, who fight against our own dear Father.