The scaling mod Pehkui does not work on MCA Villagers. The reason I guess is because MCA have their own scaling system for Villagers, well the model scales but not the hitbox.
Command used:
/execute run scale set 2 @e[type=mca:female_villager]

Yeah makes sense

To avoid at least some of the million bugs in relation to the MC pathfinder the scale is limited to 1.99. Not sure how I can provide compatibility while avoiding villagers getting stuck at literally everything.

Solution: Configurable : )

Note: We are not liable if we make it configurable. You are on your own from there :)