No offence, but the guy that made that map have no idea of the game and where to find the XP or equipment faster or do not know how to make a proper effective build for Dos1 (Fire twins boss at level 9 LOOOOOOL) o.o
Each area still has enemies of a distinct level each -- and oftenly, they are placed such on the map that they act as road blocks. Additionally, if you don't defeat most of them, later on you will lack the levels to progress. Levels are hugely important on this game, as they scale harshly, even for items (a Level 2-3 sword may make multiple times the damage than a level 1 sword -- luckily on D&D things work a little differently).
What? TB games have nothing to prove commercially. They´re a success.
Prior to DOS, not for classic, Western RPGs though. Even Larian had admitted that every time they had proposed doing a TB game prior to going fully independent, they had to buckle under publisher pressure. TB combat was seen as a no-no-no for a very long time as far as Western RPGs are concerned…
Ever since, even real-time games get TB modes (Pillars Of Eternity, the upcoming Pathfinder). That's quite a turnaround. It's almost come full circle though, as Obsidian seem to suspect that their RtwP system isn't as commercially viable anymore as in the heydays of real-time strategy games (which Bioware back then were big time inspired by). I had quite a bit of fun in Deadfire playing in real-time (with pause), too. For diversity's sake, exclusively TB games wouldn't be a good thing either.