No it's not attacking gays. These policies were implemented back in the mid 2010s and sexual orientation is irrelevant. It's a huge deal where priest basically are held to an even higher standard publicly. So while in the 70s this priest could've been shifted elsewhere, now because he's publicly a sexually active person, the Church wants little to do with them.
I've been through like 3 of these types of meetings our church made us do (when I was still Catholic). They were more like "if you see something, say something" and "how to catch a priest predator" inadvertently. It's more like the Catholic church only wants virgins and people who can't be proven otherwise as priests right now.