If you can choose not to allow LGBTQ+ folks as customers you should have to disclose that to all potential customers so we can choose to go elsewhere.
also if you are a supporter of LGBTQIA+ folks (for *any* reason, which you are certainly not obligated to reveal or discuss), you have every right to NOT provide services to those MAGAs and others who are actively, publicly, and intentionally harming members of the LGBTQIA+ community. I think it works both ways, if that is what the supreme court has decided.