True for the electronics, though the manufacturer does have a free used pod recycling program.Pod recycling program
Not true for the insulin. After a pod is finished, just stick in a syringe and remove any remaining insulin. Usually I use that for bolus injections over the next day or two, but if there’s way too much I’ll use that for part of the fill for the next pod. (But I don’t move leftover insulin from pod to pod to pod, just in case that could cause a problem.)