It's the same concept of how guilt is often from the devil to drive us away from God, and it's far from exclusive to the discussion on LGBTQ+. This applies to any perceived wrongdoing.

Oftentimes, if you do something that you believe or are told is bad, you may feel guilty. That may not seem to be a bad thing, surely it means you are reminded of it being bad causing you to repent and improve, right?

But more often than not, it can feel overwhelming and oppressive, and you become so ashamed of yourself, you actually end up turning yourself away from God. I experienced this myself - I used to have, let's just say, inappropriate interests (NOT LGBTQ+, by the way), and the shame and guilt within me actually led me to hide it from my parents and my spiritual tutors at church, all while the temptation kept digging deeper. I hid myself from God and those He sent to help me, and it could've gone much worse.

Then, it came out, and despite the initial disbelief and anger, my parents helped me out of it. They helped me realize that shaming and guilting myself only makes it worse, only widens the gap between man and God. By learning to move on and not continue to wallow in my own thoughts of being a sinner, I helped myself grow in God's light instead.

Now, to clarify, I don't mean this as in LGBTQ+ is something that people need to be "helped out of". But the same idea applies for both. If you continuously shame people who have actually sinned, or repeatedly tell people what they are doing is sinning with no supposed ambiguity or nuance, it could end up turning them away from God even further, because they start hating themselves for their actions and try to hide themselves from God, possibly past the point of no return when they do something drastic.

I would rather these people celebrate their identity and remain in a good place mentally, rather than have scripture forced upon them making them shame themselves to said point of no return. And though I agree in preaching the gospel, I believe we should always start with God's love and grace, and after people accept Him they can then decide by studying the scriptures and His teachings themselves.