lots of us freeze and forget our technique on runs like this.
If you are prone to freezing and "forgetting" a skill, then you have no business skiing on a black run.
What a rude comment, you sound like a teenage girl trying to put her down with bitchy comments.
Because this is a mature, well
thought out response?
I’m not sure anyone would call carved turns with stops after each on an icy black the most basic of beginner moves…
It's the ultimate novice mistake of people over estimating their skill. And given you were unclear what the instructor was trying to teach you, and you were unable to follow the command, it's obvious you took on more than you were capable of.
If I took a class out on an icy black, I'd be very surprised (and annoyed) if I was having to teach them things they should know already if they joined that level of class.
But sure, blame the instructor for your over confidence and lack of skill.