"Progressive"? As in for a progressive style of riding, a progressive brand, progressive technologies? I would say yes to all 3
As for boards being advanced (or not) based on sintered or extruded bases or Elan vs GST being able to produce better/worse decks with an extruded base, there is no merit to that.
The Whitelines buyers guide simplifies boards into 5 basic types; womens, progressive, jib, all mountain and big mountain.
It's way over simplified and really is no more than a basic guide.
In their 'pick a stick' section they suggest progressive boards are for people who 'have spent 3 weeks or less on the snow'.
Their write up on the Whatever is pretty poor and consists of 4 seven word lines about TBT in general being catch free and popular with beginners and 3 more lines about the Whatever having a cheap extruded and therefore slow base. Shame really, their write ups on the rest of the Bataleon range are pretty positive.