So, two responses here:

First, when you think about the products that could be marketed without accreditation, you can't just think about the marginal cases where there is some plausible value; you have to think about all of them, bearing in mind that there is virtually no correspondence between how well something is marketed and how plausible it is an investment. See, for instance, the unregulated nutritional supplement market, which is is a hive of scum and villainy that kind of perfectly encapsulates this problem while being self-limited (in the non-pyramid-scheme case) to the amount of colloidal silver solution any person could reasonably purchase --- unlike an investment, which begs its purchaser to plow their life's savings into.

Second, contrary to the perspective you get on this issue by just looking at tiny startups, you have to consider that the entire securities industry is in a sense gated on accreditation, because the difference between a security that requires accreditation and one that doesn't is "keeping timely audited findings with the SEC". So for example: if you did away with accreditation, why would companies need to produce audited financials?

If your belief is that the edifice of securities regulation is entirely pointless and people should be able to buy any investment product they want and companies should be able to sell any investment product they want, that's a coherent take, but not one ("let's do away with companies having to file official statements") that most mainstream people would find persuasive.