One of the hardest thing for ambient adoption has been getting people to understand how easy it is to use.
Years of tricks and workarounds to make sidecars work can be thrown out since so many things "Just Work", but its hard to detach from the old ways.
Customer calls with ambient users hit different... got off a call where the issue was, I quote, "After deploying ambient cluster-wide, nothing broke and there was no latency impact at all, so something must be off".
Nope... that's just how it works!