No. A lower level FFG official who announced that it only worked for ICE subtypes was outranked by Damon. You can choose any subtype. There is no such thing as an “ICE subtype”, only subtypes, according to the language used by Damon. Supposedly we could get a Resource - Sentry Tracer Connection tomorrow, ruleswise.
You are allowed to make up subtypes. If you pick a subtype like “Asset” or “Archer” you are essentially making up a subtype.
For a Panch shenanigan to work, the instance of the word on the card involved has to be a subtype, and has to mean “a card that has that subtype.” For instance, the Enforcer shenanigan works because the “console” in “trash a console” means “trash a card with the console subtype” (I think console is even bolded but not sure). Giving Pop-Up Window “tag” won’t let Keegan Lane trash it to trash your program because Keegan Lane is saying for you to remove a tag-game-commodity, not tag to implicitly mean “a card with the tag subtype”.
You can’t run around willy nilly insisting that words could maybe mean “a card with the subtype” when that’s not what they are meant to mean (especially when bolding is there to make it extra clear)