What's with all the panic attacks?

Forgive me for being direct, but what's the deal with everyone reporting panic attacks? Either as their reason for quitting, or as a withdrawal symptom.

For context I've been using nicotine pouches for 8 years on and off (mostly on) and know a few others who have used for 3+ years and they've never reported anything like a panic attack. Anxiety yeah, but never a full blown panic attack

My ignorant brain is drawing a conclusion that all of you are using actual ZYN in America and it has something to do with that. I order from Europe and diff pouches other than Zyn so is this a factor? Body chemistry? Psychological causes?

I enjoy this sub + reading everyone's stories and input, it does motivate one to consider letting completely go of the pouches

But seriously, what's with the panic attacks?