that's a fair thought to have! @Blackcloud have you looked into psych/counsellors who are ND before? i think recently i've been hearing that more professionals have lived experience, which is much better for us in terms of feeling heard and understood.
when i was looking for support around social anxiety, pretty much all the psychs n clinicians told me the say thing: exposure to social situations and practice is key. i'm definitely not a fan of it, i find it very uncomfortable throwing myself into social situations but there was a quote that made me realise that sometimes taking that scary, uncomfortable risk is what we might need for change to actually occur. i can't find the exact image but this is close enough:

at the same time, i do acknowledge that everyone is different and being ND adds additional factor to consider such as masking. it is tricky!! for some, the exposure therapies work well, and for others, it doesn't. but i think by trying this psych session, and all the other social skills training you've had - it's brought you a step closer to figuring out what works/doesn't work for you - and that's still important!
are there any other options you'd like to try out in terms of socialising? do you have particular goals around it?
aww yayyy glad your art therapist gets you!! she seems lovely. yeah the whole 'toughen up' stuff sounds quite dismissive, hopefully your psych can find other ways to support you if this one's not working out.