I do a fair bit of investing and advising (both for startups and venture funds). If you are the founding CEO and you are looking to leave, the most likely outcome for a company that's early, and without any sort of product market fit, is the company will die. If you don't tell investors you want out, raise money, and leave shortly thereafter, you will burn all of those relationships and damage your reputation - it's…
Sounds like getting a "real investor" is not something a good ceo would want. I'd prefer a fake one.
It's a hard reality, but imagine you are the one re-capitalizing this venture. They have a team, no customer, no product, but a new idea they want to pursue. There are a lot of early teams with ideas in search of money that you could invest in. This particular team comes with 10% dead weight on the cap table, which essentially means everyone else is getting diluted out of the gate, by someone that will bring no future value.
That makes this investment worse than anything else you could invest in, by a factor of that non active founder.