That’s seems like an argument for why increasing the blocksize to 2mb is not a sufficient solution for even the fairly short term.
An emergent consensus based variable blocksize limit however, would increase transaction capacity in the short term, and give plenty of time for second layer solutions to be developed for when that is necessary or beneficial.
A brilliant scaling solution for Bitcoin and other crypto currencies would be if they could be ‘parked’ on the Safe network in exchange for Safe based tokens that have very low fees, fast transaction times, and the ability to be used in smart contracts etc, then removed to the blockchain when required.