No...not bad, just misinformed. Social media spreads good & bad info, it can be hard to tell the difference but it's never to late to learn better ways. That's why we're here.
F/t rodents lose a little of their scent after being frozen & thawed, but most snakes adjust quite well, & you can just pinch-damage the nose w/ your tongs to release more scent.
Actually, depending on your snakes, many become better pets when fed f/t...a bit more relaxed & less ready to bite either in self defense (when you reach in) or out of confusion. Most snakes still grab & go thru the motions of constricting, but some will just eat "politely" from tongs...just depends on their personality as to how much they learn to let down their guard.![]()
Here's the thing though: a young BP can eat rat pups, but as snakes (including BPs) grow bigger, their nutritional needs are better met by larger (ADULT) rodents, because the adult rodents are less fatty, more protein & minerals from bigger bones & muscles. Live rodents do NOT have more nutrients, and besides that, they can give your snakes intestinal parasites-WORMS! which do not survive in frozen-thawed rodents. So you probably should get stool samples to your vet so you can see if any of your snakes need de-worming.
You are correct that by feeding young rodents (rat pups) there was virtually no danger to your snake, but IF you were feeding the appropriate size (age) rodents, they sure would be.