[1] According to google, it's defined as:
"the principle that Internet service providers should enable access to all content and applications regardless of the source, and without favoring or blocking particular products or websites."
Well, since the formal repeal of net neutrality has been delayed, I think it technically is a violation of the no-blocking rule.
OTOH, it's not like the FCC is enforcing net neutrality while delaying the official effect of its repeal.
Clearly, they’re discriminating against certain client devices, and were under the Obama administration too.
However, the documentation says it should work, and AT&T won’t provide support.
They’ve been getting away with this for years, so I guess plausible deniability (it is “just a bug”) can work wonders in this space.
See: Monopoly/duopoly of telecom in the USA, net neutrality protections, and the speed limit signs on 280.
until they are selectively enforced.