You could have responded along the lines, “Sorry to hear it. I guess you’ve had some misfortune on that front.”

Instead you responded with a straw man:

making judgements about large groups of people

It’s a straw man because:

• At no point did I generalise or say all NTs do that.
• I merely mentioned my experience.

Critcising an Aspie for reporting their lived experience is cruel and unsympathetic: the opposite of allyship, and wholly against the purpose of this sub.