I'm referring to this: https://superuser.com/help/on-topic
"asking for a hardware shopping recommendation" should be included. Don't know why it is not explicitly mentioned when it's a valid off-topic close option.
"asking for a product, service or learning material recommendation" - Can we edit that to read "product (software)" instead? I've had an experienced and relatively high rep user argue with me that FOSS does not fall under any of the three categories and so asking for it is allowed.