The morels can be pretty nasty though compared to those on this list. E.g a common mistake is to dry them in a regular kitchen oven. When you do, you’ll risk endning up with bad headache or nausea if your kitchen isn’t well ventilated. This doesn’t exactly happen when drying porcini.
Morel toxicity is mentioned very briefly on the Wikipedia https://en.m.wikipedia.org/wiki/Morchella