I think points #2 and #3 continue to apply. You can't say that the new framework will result in more dilution in "basically every circumstance," because that assumes all of the surrounding aspects of the circumstances will continue to remain the same. I can model out a scenario for you as well that shows a thoughtful founder now able to better plan out a round using a series of escalating valuation caps, rewarding the earliest investors, to raise the same amount of money but for less overall dilution, in precisely the manner described by PG in his original post. Or another scenario where investors are ok with slightly higher valuations because they have certainty of ownership. Or another scenario where a founder who previously would've raised an unnecessary extra 5% now doesn't, because the dilution math is clearer.

Your point about safe dilution being 15-30% is exactly right, and exactly one of the reasons we're doing this. The high part of that range is too high. People are raising too much, on too dilutive terms, because of the lack of transparency. Founder dilution is driven by what everyone else on the cap table is getting, not just us. If that sum total of "everyone else" is still less, founders are still net better off. If you want to frame the dilution aspect all indexed to YC ownership, that's ok, but the outcome was already pre-figured by your choice of framing in the first place. We can agree to disagree on that.

That said, I think one thing we can definitely agree on is that the success or failure of this new framework will be judged by whether founders are more or less diluted in the end, and have a harder or easier time raising money. We've already made our bet, so there's not much to do here but let it play out.