well, we can't be really sure that Holdo met Poe's parents unless I missed something when searching for that. I think her suspicion is justified given the circumstances. Poe, in a way, is a traitor since he started a mutiny against her. But I also noticed how Holdo wasn't the oddbal was described to be in the Leia book. Maybe she canged as she got older? These things are the result of the movie being written so early into the Canon's lifespan. I doubt Disney cares much about those inconsistencies tho, since like 80% of the audience doesn't read the EU stuff.
My experience was completely different. The whole cinema, kids and adults, enjoyed the movie to the point that it almost got obnoxious.