I generally agree that we shouldn't armchair diagnose people, especially not for gossip's sake. But in this case Bryan is actively promoting a lifestyle which looks symptomatic of a disorder, so it's probably in the public interest to point that out.
The post author did so in a thoughtful and respectful manner.
Exhibiting symptoms of a disorder is not the same as having a disorder which is why it's irresponsible and inappropriate to diagnose people based on their social media.
The post author did so in a thoughtful and respectful manner.