Yup, you are.
The author posted on this forum because he was concerned and was seeking advice, which was the appropriate thing to do. Employees at PetSmart, Petco, etc. often don't know what they're talking about, so it's nice to have a place like this to find some real answers.
The loss of the animal was hard enough. I doubt the mistakes will be made again, so play nice. Judgments aren't going to make him feel any better and they certainly aren't going to generate any sort of positive reaction.
Commandokev, I'm sorry for the loss. Take the responses here with a grain of salt, but do try your best to learn from them. Remember that if you feel/notice anything odd, even if it's probably nothing, it's a good idea to give the vet a call first, then post here.
Best of luck with your two females. Keep them safe and healthy.