Definitely there are people with actual conditions that need to be addressed, even a very small percentage with actual long covid. Some small percentage suffering from lack of treatment early on in the pandemic when there were no therapeutics being offered and people with covid were told to go home and tough it out and if it gets bad enough they can come back to the hospital and be put on a ventilator and die. Also, as you mention, there are certainly other maladies being labeled as long covid. Medicine these days is highly infected with "the latest thing" syndrome. Whatever is popular becomes the easy diagnosis as that treatment usual involves people making money, and it's easier than trying to find the actual cause of someone's ailment.