Something I've heard about recently is that copper piping is highly susceptible to corrosion in FL, something to do with the soil/water content?

Galvanized steel plumbing is something to keep in mind because the corrosion on the inside of the pipes can really restrict your water pressure/flow over time.

It is also likely there have been numerous water leaks over the past 10 years or more that have further damaged the electrical system by causing unseen corrosion of conduits and boxes, potentially with water penetrating into the conduits and accumulating in low spots.If some/all of the above is accurate, your Board should have been well aware of the condition of the system, especially visible components such as the meter boxes.

I know they had a ton of issues in those houses, I've even seen some pictures of the wiring,outlets and plumbing in the walls having corrosion issues because of the humidity and mold issues.

Worst case with metal is that it gets dented from hail and gets surface rust and corrosion and needs to be sanded and painted again in 30 years.

Galvanized pipe will often "fill" with corrosion and debris over time, gradually closing off the pipe and lowering water flow kind of like a clogged artery.

I offered the tenant to hire a plumber, but unless it’s a defective plumbing issue like corrosion, they will be responsible for the cost.

There's corrosion present, an inoperable thermostat, and it's about 20 years old at this point.

I should probably let them know that I can hire a plumber and unless it’s an issue in the main drain, or something with the pipes (corrosion, etc), they will be billed for it.

Salt air corrosion is real.