Can we sell n95 masks and hand sanitizer on Square hosted sites?

Can we sell n95 masks and hand sanitizer on Square hosted sites? I am looking to move my online stores from shopify, they are a freaking joke. 

I'm using both shopify and squarespace and in terms of e-commerce functions such as payment options and flexibility and shopify's CRM back-end, shopify is way superior. May I know why is shopify a joke?