It's completely unsolicited advice. The comment it is replying to is adding first-hand testimony to the discussion, not asking for suggestions for how to manage their own condition.
Mere mention of one's own medical situation should not generally be deemed to be open season on the entire internet tossing out medical suggestions, no matter how seemingly insightful. Most people with serious, long-standing conditions know a lot more about it than the average person on the street, have tried myriad approaches to treatment and get incredibly sick of having everyone "helpfully" toss suggestions at them at the mere mention of their diagnosis.
It's exhausting to have to say over and over "I've tried that or have a good reason why I am not doing that. I'm aware of those options. My short comment here is not remotely a comprehensive medical history."
Everyone puts it on the chronically ill person to be polite and respectful and make them feel good about wanting to help. But it's an incredibly negative experience to be constantly bombarded with such "help" and the implicit expectation that you should be politely appreciative of their good intentions.
I'm one of the people that downvoted it and that's why I did so. I'm chronically ill and also post as openly female here. I'm abundantly familiar with the desire to simply say "Oh, hey! I know something about that!" only to get a slew of advice I didn't ask for. The subjective experience of that is that the entire world clearly thinks you are an idiot who isn't trying hard enough and that's the only reason you can't fix your chronic, intractable problems for which the world has no real solutions or you would have already long ago sold your soul to the devil to finance the slam dunk answer.
This is part of why some parts of Twitter are awash with bitter complaints about Ablism and how terrible Abled people are.