You’re right and this is somewhat elaborated on in my “Grind Zones; Explained” section, in case you didn’t read it, but regardless of the changes I believe starting Alemeth at around 205-210 is still preferred, and you still only need to stay for 5-10 levels.
Like, you’re not wrong, but I don’t think grinding there sooner or longer is necessarily or technically more efficient. Evac is still more than Alemeth, Storage more than Evac, Maven more than Storage, and ultimately questing is practically the best available exp/h. So… The old method is still the current method in my opinion.