I can speak for myself and I only explain if asked directly to do something that I do not feel comfortable doing.
I have never heard of anyone being forced.
I have many times heard them in general when its busy urge large parties to split so not everyone was in the bag line.
I have a feeling they did not drag you away.
Had you said I would like to stay with my mom they would not have argued.
I’m very sorry I worded it that way. I certainly wasn’t thinking you couldn’t speak for yourself.
What I have encountered on previous visits is what you described. This was different. I wasn’t physically dragged but I was spoken to directly and told I had to use the no bag line.
Honestly when it happened at studios I thought it was just one security guard being a bit over the top (we all know that happens sometimes...) but when it happened again at Epcot I realized it was a new policy.