I agree, people sometimes want to stir up something in threads like this.
OP, just know that you should not tell LGBT people that they should not be proud of their sexuality as it sounds quite tone deaf. You would come across as homophobic, as opposed to someone trying to defend their faith. Most of these people struggled a lot and comments like that will turn them away from you (if they are not receptive to religion, differing views). To them it seems like you are condemning them, not loving them. Remember, you cannot expect someone to magically become a Catholic just by telling them that they are doing something wrong. You wouldn’t convert if a Muslim told you that you should not be proud of your faith because worshipping Jesus is wrong, right? Because to you, your faith is the truth. Likewise, they are very proud of accepting a part of them (that was probably the target of hateful people) and they sincerely believe that they are not doing anything wrong.
Again, Catholic teaching does not condemn the attraction, but the behavior. A practicing Catholic can be openly gay and chaste. And he isn’t ashamed about his attraction and he can easily talk about his struggles. Nothing wrong with that

I know you probably know this but it doesn’t hurt to reiterate this.
And with other controversial issues, social media is a terrible place to discuss them. Screenshots can ruin you. And because you cannot easily detect the tone of others you could ruin someone too.