The way ESO level scaling works is that you’re power is scaled to CP 160 while you’re leveling. The world is at CP160. This way not only can you go anywhere you want but you can group up with people more powerful that you. Overworld content can remain semi relevant up to this point. Once you get past this point things get easier. By the time you hit CP 300 you have grown so powerful virtually all overland content is trivial … and you have over 500 points left to spend.
Yeah, CP is a problem and it’s being reworked.