Meh. I get the annoyance, but it's a one time cost for a small subset of their users. I would prefer if there was a flow during device setup that allowed you to opt into developer mode (with all the attendant big scary warnings), but it's a pretty reasonable balance for the vast majority of their users. (I suspect the number of scammers that are able to get a victim to buy a whole new device and onboard it is probably very low).

Get with the newspeak, it's called "sideloading" now and your corporate overlords get to dictate the terms.