Plastic kitchen tools like a spatula, made from any kind of plastic, will break down mechanically and in high temperatures. Always. It can't be good to eat plastic, i'ld rather avoid it. Wooden kitchen utensils of course suffer similar issues, but I'm a bit more fine with ingesting tiny pieces of wood once in a while. If I can, while tending to my food, I will always use glass, metal or wood instead of plastic. But you do you, plastic is cheaper... It's not poisonous by the way, but is can be carcinogenic. Yes, arsenic is deadlier than plastic. That does not mean ingesting plastic is healthy.