Thoughts on a potential double standard regarding LGBTQIA+ and religious beliefs?

I’ve been thinking a lot about a specific dynamic in cultural discussions, and I want to share my opinion to see what others think. 

I struggle to understand why someone is immediately labelled "homophobic" or "LGBTQIA+-phobic" simply for stating they aren't an ally, or because their personal beliefs (like Christian beliefs) do not align with the community. If a Christian says they believe marriage is between a man and a woman, or that there are only two genders, they are often viewed as a bad person. It feels like the community implies, "You have to believe what I believe." If a religious person forced their views like that, they would be heavily criticised. 

However, when an LGBTQIA+ person says they hate religion, it is often accepted or viewed as just an opinion without being labelled as "phobic." 

The core message of the LGBTQIA+ community is usually about freedom, and that it is okay to believe what you want and love who you want. But it feels like that standard changes the moment a religious person shares their own traditional beliefs. It seems like a double standard where one side is allowed to state their opinion, while the other side is called awful for doing the same thing. 

I’m curious to hear your perspectives on this. And before anybody asks, yes, I am a Christian, and I feel the need to say that I do not hate anybody; I just have my opinions and beliefs.