Yes. In particular, they are much less of a concern than the epidemic of people killing themselves with opiates. This is so blatantly the case that I see this piece as simply axe-grinding of a certain agenda. The author is distressed and annoyed that sympathy is going towards this suicidal population. The author wants to direct your sympathy towards people like this guy.
And this guy's problem is not 'pain'. There's medicine for that. This guy's problem is that doctors are skeptical of his pain. And that is way, way, down the totem poll of things I care about, vs. an entire population group killing itself by whatever means are handy.
When I was eight I was worried about people not believing that I was really sick.