Parent is referring to the accredited investor definition in the US [0] specifically ($1M+ in assets as one test), but more broadly to similar financial gatekeeping.

I'm skeptical it's an overall social good to remove guard rails that prevent sophisticated sellers from fleecing unsophisticated buyers (say what you want about the SEC, but they do enforce some rules), but I agree the current scheme prevents all people from equally freely investing in all opportunities.

[0] https://www.investopedia.com/terms/a/accreditedinvestor.asp