I think this is the attitude tech accelerators are actively trying to avoid when they look for startups with more than one founder. The most important thing by far in a startup is the ability of the founders to work with other people - to be successful in an accelwrator you'll need to work with the accelerator team, other founders, investors, people you hire, and your customers. Having a co-founder or two is a strong signal that you can do that. You will have no control whatsoever over who most of those people are, or how "qualified" they might be. You have to have the ability to get on well with them and work with them no matter what.

That doesn't mean you can't be a solo founder and succeed. People do that. It just means you're much less likely to succeed in an accelerator if you can't demonstrate the ability to work well with others.