Let's say they do, but does that mean you stand a better chance to rank higher than a competitor who uses hyphens? If hyphens represent spaces, and a user searches chanel number 5, doesn't that mean a website that has the url chanel-number-5.html might rank better than chanelnumber5.html.
Similar to a human, it would be easier to read chanel-number-5 than chanelnumber5.
So even if the bot reads a url without a hyphen, a competitor with a hyphen might edge out.
That's my two cents