Oh you bunch of pedants !!!
(PS it's 'squawking' not 'sqwauking')
I have a bigger problem with pilots who don't give me the passing altitude or who check in with only the callsign...
There are ways around that one. You let them level off and then once they have made that level check you clear them further and tell them if they'd given you all the info on first call then they could have had continuous climb/descent
