I can second this. I worked for a similar unnamed incubator company in the Bay Area and a vast majority of the ideas sent to us were from good-hearted people, but absolutely ludicrous and—at least from our opinion—would never be able to become successful businesses. Some people just really seem to have problems understanding product-market fit.
My guess would be that applicants to Y-Combinator are probably along the same spectrum–some great ideas, some decent ideas, and a lot of junk inbetween.
If they don't answer just watch a few seasons of Shark Tank or Dragon's Den (any country). I highly doubt there's much different in business nut-bar factors. Some people just have no grasp (yet) of what it takes to get good.
Yeah. The way a person communicates tells you a lot about their ability to lead a company. Most people would pitch us ideas and we wouldn't even vaguely get a sense of what they were trying to sell—native english speakers too. Not surprising at all—but people who had chances to get funding were those who were clear & concise. Those who's pitches who we didn't understand immediately were for the most part mentally discarded and never acted upon by us.
There are plenty around - one example where I live is a very persistent chap with some sort of mystical flying machine based on garbage physics and a track record including fraud by scamming investors.
My guess would be that applicants to Y-Combinator are probably along the same spectrum–some great ideas, some decent ideas, and a lot of junk inbetween.