Secondly, being depressed and being suicidal are related, the first often comes before the second, but not the same. By putting suicide hotlines front and center, the impression is there, though.
I know multiple cases where "but I'm not trying to do me any harm" was an internal barrier not to seek help, although they were depressed. If you are seeking help because you are suicidal, that's already way too late.
Finally, it assumes that this is just an unfortunate side effect of startup life, without critically engaging with that statement.
If you are down for irrational reasons of in emotional flakey states, try to find contacts, post on devpressed, visit a professional. Even if you don't have a strong or lasting depression, this will probably help get more secure in your feelings again.