I would. A bird in a store lives under a terrible light schedule and lights. It never goes out of his cage. It doesn't get a large range of fresh produce and, most often, none at all. It doesn't have a chosen human or, in this case, a mate or companion (the gray doesn't qualify). And the customers are nothing but strangers and the only thing they add to his life is stress.
Lovies are only screamers when upset or when they feel the need to make constant contact calls (because they get no reply) so the fact that he screams so much and so loudly is a clear sign that he is not a happy camper.
You obviously didn't understand my post. This is the first and ONLY time I have heard this bird scream. I go in to that shop multiple times a week and he is always quiet and either beak grinding or chortling to himself.
Both of the shop Parrots (Grey and Lovie) get pellets and fresh produce daily.
The Grey is out on his play stand with toys and food all day and both birds are put in the back of the shop in their sleep cages at night so that they can sleep soundly (away from the lights that are left on).
This pet store is top notch. They take absolutely AMAZING care of ALL of their animals. 90% of the animals they sell in the store are from local breeders (ethical, reputable breeders, not "mills").
Their Rabbits, Cats, and sometimes Puppies, Birds, and other small animals are all in the store from local rescues to get adopted.
Please don't assume things when I never said anything about the Lovie screaming all the time and I didn't mention their diet, etc.