Here in Florida, bikes practically have an expiration date. Dealing with a warranty because of corrosion is a nightmare. Some companies don’t even bother the second they see the guest is located in Florida.
A lot of people have tried layering electrical tape underneath the tape itself which doesn’t do much besides leaving a horrible residue. It’s just as bad as people who undercoat their vehicles up North. Once moisture and salt finds a way in(which it will), it’s trapped there and causes a lot more damage than usual.
Preventive maintenance is what I usually hammer onto people but a lot of bike owners typically don’t want to learn(neither do I want to fix their attempt at a bar wrap plus smelling their dried sweat).
Again, Florida is just Florida. If you’re not on your bike with a q-tip dabbing Tri-Flow in every nook and cranny every weekend then expect some corrosion.