I am sensitive to critique that I care about. As the years go by I notice I do become less and less sensitive as a result from being decreasingly less critisized by those around me.
What this means is I think INTP's are probably as sensitive, if not more so, to critique the INTP believes to be true him or herself. But if the INTP does not put any weight to the critique him or herself, he/she wouldn't care about it unless maybe if the person is important to them, but even then it's more like being sentitive to that person rather than to that persons critique.
I would like to say that I experience critique less and less because I take the critique I care about to heart and work towards fixing it. And sometimes this certainly is the case. But more often than not I've realized that I instead found a way around the issue alltogether, essentially nullifying the issue without directly adressing it.
One thing is for sure, many of my lifestyle choices can be directly linked to my sensitivity towards critique that I myself also put weight to. So saying I am not a sensitive person is probably an insult to my life. Even though 'sensitive' is not how anyone around me would describe me.