Ability seems to go higher after upgrading to required level?

I wanted to be able to unlock doors I couldn't before when playing other endings. I had to be required 8 for one door, leveled up to 10 and it now costs 14 tech ability? Why is the game changing it up as I progress? I even went back to a gate to see if that stayed at 8 ability and this other door was just a requirement 14. Nope, they changed and now what the hell is the point of using any of these points in tech and intelligence if they keep going up as I upgrade to the level specified?

Example at Damirs when I didnt focus on tech ability it required 8. Then I did a new save and am on same mission, put in my tech ability to 8+ and now it says the doors required 14. What???