HFAP First 2 Cards, Early Position

[maverickai]

Hi, hope I can clarify some doubts here.

Pg 25 of HFAP, 4th Para, "If no one has opened and you are in an early position, it is usually best to raise with JJ in a tight game and to just call with it in a loose game."

I understand the rationale that you raise with JJ in early position, in a tight game to cause those with cards like KJ+ to fold, so you minimise the chance of making a tough choice with many players if the flop comes Ace high or K high.

How about calling with JJ in a loose game? How issit suppose to work? I would still raise, with intention to fold those weak hands, and add value to those who cold call me with crap.

Am I missing something on the interpretation of HFAP on this?