Clarification 1. A phobia is an irrational aversion or fear or hatred concerning X (see Mayo Clinic's online entry on phobia), whereas one is not necessarily phobic if one has reasonable evidence-based concerns about X. Being concerned about very large spiders near little children doesn't mean one is arachnophobic.
Clarification 3. Calling a critic of LGBTQ+ names such as “homophobe” or “biphobe” or “transphobe” or “bigot” and then dismissing the critic’s arguments on the basis of his/ her alleged personality disorder (whether it’s a phobia or whatever) is to commit the ad hominem fallacy.
Clarification 4. Not all tolerance is good, and not all intolerance is bad.
Clarification 5. In the case of same-sex, etc. sexual relations, the public issues have to do (minimally) with balancing possible harm and freedom of expression.