Yes. As Zinc already noted, pet stores are there to SELL things. Very few of them know what they're talking about when it comes to proper snake care- the employees are mostly doing what they're manager has told them & have little or no other experience with snakes at all. I've seen absolutely atrocious care of snakes in pet stores, which is why I seldom go in them any more. If they were receptive to education I'd try though, for the sake of the snakes.
And as far as pet stores making sales: Consider that they may want to sell you a snake that gets much bigger than you really want or can handle, just so you'll be back buying more food all the time, or new enclosures when it outgrows them. Remember that pet stores have a lot of "overhead" (costs of running a "brick & mortar" storefront) so they need to make sales to stay open, much less make a profit. Rather than tell you the BEST products for your pets needs, they're going to want to push whatever they have in their store. Never forget that...Their "advice" is profit-motivated.
Some of them (employees or managers/owners) may mean well, but do your own research anyway- don't risk your pets doing what you see them doing.