WBC has something like 1,200 rooms and operates at close to 100% occupancy most of the time. That's tens of thousands of guests each year.
You can expect some anecdotal complaints -- some valid, some just looking for a nit to pick. There is also a tendency to post negatives and be quiet about positive experiences.
I've heard the same types of complaints about Disney deluxe resorts and DVC -- including some real horror stories. But in more than 30 DVC trips, we have never had one single complaint about the cleanliness of our room. Nor have we had any complaints in several WBC trips.
Assuming you are not from Florida, I will comment on roaches. We have large roaches here called Palmetto Bugs. To add to your enjoyment, they fly. Leave a door or window open, they fly in. That's not a sign of uncleanliness or poor housekeeping -- it's just a sign that you are in Florida. They're disgusting, but they don't eat much.
We also have zillions of lizards which we pay absolutely no attention to, but which might startle you a bit.