Comment by karpierz
Here's an analogy that might make it clearer:
Alice is in a wheelchair.
Bob has a broken leg.
Charlie is unfit, but otherwise a healthy adult.
Alice, Bob, and Charlie would all say "I find getting up the hills of San Francisco difficult". But "doesn't everyone find that hard" conflates the causes and severity of the difficulty for the three of them in a way that isn't useful for making their complaints feel heard, or addressing the complaints such that they don't have that issue.
For example:
Alice could get an electric wheelchair.
Bob could take public transit / Ubers up, or get rides from their friends.
Charlie could take up running with friends.
Right. But then when someone says "I see the symptom of broken legs everywhere now. When the blog author said they had trouble getting up the hills of San Francisco, I just knew they must have an undiagnosed broken leg", it's fair to be more than a little skeptical.