I see enormous progress since WW2, both economically & socially.
We peaked around the late 60s, around the time of the Moon landings. Ever since then, it's been downhill. We haven't even been back to the Moon. We were supposed to have had a Moon base by now, as well as manned missions to Mars.
I don't know what "minor tweaks" you speak of.
So I don't buy that argument.
I remember your opposition to proposals for rent and price controls, among other things.