Exactly takemyhand
Obv Canada is different, and thankfully we don't have kangaroo courts human rights tribunals that anyone who feels slighted and is happy to represent themselves can make use of for minimal personal expense to bully anyone who has incurred their wrath. And unfortunately one of the defendants responded (allegedly, according to the excellent record from Elsie) "You're a man, LOL", which was clearly unhelpful.
But from a UK perspective I can think of lots of one person / small business operatives, our local store has a board full of cards offering a range of services , anything from babysitting (don't give JY ideas, he'll be persuing parents who reject his offer of help next) to counselling to gardening to computer help to the local odd job one man builder man. They all work on an ad hoc basis, lots of personal recommendations and word of mouth. But I'm pretty sure any of them feel entitled to, and do, reject potential clients if they sniff a rat or just don't feel like it. How else can these people be expected to work? Hell I'm pretty sure doctors can and occasionally do or find a reason to reject referrals for various compelling red flag reasons such as a strong suspicion of Munchausen or previous form for litigation.
It all makes no sense to me apart, unfortunately, for that one infelicitous text response misgendering JY which obviously laid open the accusations of discrimination, even so that's just the one we have heard about of the sixteen or however many there are.