All this "ST tires are junk and LT tires are the shiznit" talk goes 100% out the window as soon as you step down from 16" rims to anything smaller...because there basically are not any LT tires with the load ratings needed for those rim sizes.
Agreed, this is mostly an RVeeer thing and some boaters. Those that use trailers as tools and not recreational items are like the honey badger. They don't give a ___.
If it makes the ST tire crowd feel better, we beat the living snot out of 16" ST tires on our deckover trailers. Aside from road/jobsite hazards I can't recall any of those tires coming apart without some help form a piece of rebar or similar.