Haha I totally get that. It's fine really, you need to ingest some part of all mushrooms that I know of, at least here where I am, to actually get poisoned. Still, it's probably a good idea to be somewhat aware of what you do with your hands afterwards. But that's just general good advice when touching stuff you don't know about I guess ;)
I know that the mycology subs on reddit always allowed slimemolds even though there was a slimemold sub too. I just like people to know the proper classification of what they are looking at.
For a child, or pet, it is probably good advice, especially because extremely amounts of toxin can be transferred through your pores and they are potentially more affected. rashes, itching, nausea, eye irritation are possible in those cases, but even with the craziest mushrooms, cases are extremely rare. I've picked up the death cap with my bare hands, and yet I type this.