You're talking if guys pitching overpriced and underquality gear is completely unheard of, or if flawed business ideas are a rare occurrence.

I get it, support and enthusiasm is always nice to have. But if you descend into the real world you'll see that more often than not you'll see a mix of fraud and overconfident people pitching undercooked ideas that they under deliver, and you're criticizing those who might as well have experienced that first-hand for a few times.

It's not like these people are providing a valuable service, steering everyone away from the dumb scams. They're just pattern matching and assuming everything they doesn't seem to make sense (in their generally not-well-informed opinion) must be bad.

It's unnecessary, and is noise just as often as it's not.

Unfortunately that recommendation is also pushed by snakeoil salesmen.

But from here, floating in the imaginary clouds, the error of the cynics was pretty easy to spot. It was that there are different types of wheelchairs and the cynics were just googling up the bargain-basement mass produced ones. I guess in the real world everything (including medical devices) is one-size-fits-all?

The word you're looking for is "arrogance." HN comment sections are no better than reddit, if not worse, with people arrogantly making all sorts of statements that are demonstrably false with a simple google search.