I don't think the original comment meant that it is sketchy to make a living out of software. I think the issue is the posturing as open source, having a github repo with no code just to attract devs and look open source-y and even sharing it on HackerNews right after the issues with closed source by Postman too. Feels like an "open source alternative", but not really, hence the sketchy accusation.
But this is just how I read it.