Yes, but what about allowing me to run adb commands on my phone with my consent, and especially delegating that privilege to "strangers", again, with my (one-time) consent - by which I mean authorizing apps to run with elevated privileges and/or reestablish the debugging bridge once it invariably disconnects (for other more or less legitimate security reasons)?

It's not like those threats silently turn on ADB on people's phones without their knowledge. You have to opt in to a rather obscure, hidden by default, and very fickle feature to become potentially vulnerable in the first place.