If people of faith are demanded to affirm and celebrate anything that goes against the dictates of their respective faith and conscience, then they are no longer free to devote themselves to their respective faith as they see fit.
Only when people of faith are not required to affirm that which their faith condemns can they be truly free to live in accordance to their respective faith.
https://washingtonstand.com/commentary/un-expert-argues-religious-beliefs-must-change-to-accommodate-lgbt-ideology