I've heard that reptiles can't form bonds with people. Idk if that was something from like, pet stores who didn't know/want to care properly for reptiles or what. Is this true? Or is it something that we didn't use to think could happen, but we know more now? Like how we know more now that fish can have fun or play.
it depends on what you mean by "form bonds!"
if you mean "form a pack/clan bond with you using happy brain chemicals", then no. that's strictly a mammal/bird thing.
but, if you mean "recognizes you as an individual and a place of safety, tolerates interactions with you that absolutely would not happen in the wild and even initiates those interactions with you voluntarily" then congrats! fish, frogs, and reptiles absolutely CAN do that!
both of these types of bonding are extremely meaningful to their respective animals and one isn't inherently better than the other, just make sure you adjust your expectations to fit your pet.