Yeah absolutely people are going to be sick and still go. I also have no doubt that asymptomatic people are coming into work at the grocery store and Target and potentially checking out my groceries. They may not have any idea that they have it, but they probably do.
I can't, personally, get into the head space of knowing that people are purposefully negligent or inadvertently harming me by their entitled or unknown decisions - I just have to use the arsenal afforded to me: masks, proper hand washing, cognizance of face touching, social distancing and when unable to wash hands - hand sanitizer.
This is just me and my anxiety but if I start to get tripped up by the multitude of Karen's who are going to get their money's worth, or people who need a paycheck and will come to work no matter what, I'm literally never going to leave my house. Right or wrong - I don't know anymore. I think that Disney (and places like Disney) has provided a good safety structure and that if you follow it - even if people go when they shouldnt - it should be ok for you.
And hopefully everyone at Disney, including the CM's, are able to use what they have at their disposal and protect themselves against those irresponsible careless dolts.