I wasn’t claiming it to be totally safe. Plenty of nasty bacteria out there.
A gator of significant size in one of the rides is fairly rare. That said, be cautious banks of the Seven Seas Lagoon (that artificial lake between MK and the TTC which multiple resorts like the Grand Vic and the Poly border on) - a toddler got killed there a few years ago by a nine footer, and a few small dogs have been attacked over the years as well.
Admittedly, I wasn’t thinking about snakes. You’re somewhat more likely to come across cottonmouth for example but the rides don’t really support the fish and frogs such snakes mostly eat. Venomous snake bite cases are pretty low on property for all the millions of annual guests.