You either misunderstood the parent or are being deliberately disingenuous.
He/she asked, in effect: How do you plan to deal with the blockchain growing exponentially instead of linearly? And how much acceleration do you think is reasonable?
I needed to clarify that it wasn’t my proposal, as to how to gradually approach this, test nets are already deployed on many of the uncapped networks, I believe you’ll enjoy this great presentation by Peter Rizun and Andrew Stone, they’re far smarter than I’ll ever be:
https://youtu.be/5SJm2ep3X_M
Strictly speaking it wasn't his, it was the originator of that thread, jgarzik, and satoshi replied "We can phase in a change later if we get closer to needing it.", which doesn't strike me as a ringing endorsement.
At any rate, the suggestion was for one increase, not an infinite sequence of increases, which your suggested exponential growth amounts to.
https://satoshi.nakamotoinstitute.org/posts/bitcointalk/485/