No it's not either or. Access points don't have to have quickhacks in their loot tables from what I can tell.either you have a 5% chance of getting it meaning 1/20 or not. besides 50 terminals later i still haven't gotten a single quickhack.
I've grabbed plenty of different quality quickhacks from access points (with the perk at level 2) but far from 100% of the time.
If you buff a 1/20 chance by 100% you'll get a 1/10 (10%) chance. Honestly though, I don't really know how it works, it's just confusing and never really explained. There's many, many broken parts with crafting (in general) and upgrading quickhacks.