I don’t know how much clearer that could be. Play around in the dragonflight zones for a few hours, the gear that you’ll get from quests will be at or above 252. I’ve leveled plenty of toons as fresh 60’s with no SL gear, it’s not as easy as with the event gear, but it’s still easy.
It’s a very alt friendly expansion. Probably the most alt friendly since WoD.
Then you should have used them while the pre-launch event was still in place. They’ve done this every expansion for over a decade. The fact that people are surprised by this is…surprising.