Fine, just don't teach them to land on "zero eight" or tell them that
the departure (straight out from the runway) is "upwind". Also, "cross
controlled" stalls aren't the bad ones, it's stalls in a skid that flip
you over on your back. Might teach them something about the importance
of leaning and how and when to do it. And on most engines there is
nothing wrong with "oversquare".

As for Class B airport, you are technically correct, although Ketchikan
is neither (I guess the exception prooves the rule). But it's a LOT
easier to say "Las Vegas is a Class B airport" than to say "Las Vegas
is a towered airport (duh?), with overlying Class B airspace".
Somethings get said and people know what you mean. I don't see the
harm.