Epoxy is heavy. That's the main reason to stay away from it with these little planes.

Foam-Safe CA is expensive.

Yellow glue is cheap and it works very well. The Polyurethane glue is still less expensive than the Foam-Safe CA... but 4 times the cost of yellow glue.

I choose glues by a combnation of the loads it will have to withstand, weight for strength, and cost. When all else is equal... I go with the least expensive option.

Speed of drying is very low on my priority list. The yellow glue hasn't slowed down my building VS using CA. I can put together a 4*40 in 2 to 3 days from opening the box to first flight without using ANY CA. (and the plane is lighter and stronger than one made with CA...)