Hes Hypo short for Hypomelanistic , he also has some Nice Citrus tiger color traits I could tell off rip with his bright coloration my girl is het for hypo but carrys the gene
While most would agree with you (I am no fan of the sources most chain stores get their animals from either) it does not mean that the animals are bad. You have a very nice Hypo there with for the most part normal patterns, but does show some nice lighter orange/yellow tones.
I have 6 and one of them did come from a petsmart (just couldn't leave without her after seeing her). She hasn't grown as big as my others and at almost 2 years old you would guess less than a year, but she is healthy just small.
What matters now is that she has a good new home that will take care of her.