So you want to just ignore the issues and blame me....that's trolling, you're not being helpful at all just trying to attack me. That's trolling. You're being dishonest about apple's policies and how a band is suppose to wear out...that's just dishonest. Go away...You're just being ridiculous.
The issue is that you expect Apple to fix your mistake, which was repeatedly exposing your leather watch band to significant amounts of liquid and not taking care to protect it immediately thereafter. I’m personally too anxious/not wealthy enough to risk a workout with a leather band that costs that much, but azmscle said above that pat-drying is sufficient for protecting leather bands from sweat as a result of a workout, so I'll take their word for it.
Apple plainly states that the Leather Link band "is not water resistant" on the product page and
always has. You exposed the band to water and it got damaged. That isn’t Apple’s fault, and its warranty — which does include watch bands — covers defects in design, workmanship, and materials, but not accidental damage. (No, leather that gets damaged from water exposure is not defective because it got damaged from water exposure.)
Again, it’s regrettable that you had to find this out the hard way, but it’s not Apple’s fault that you didn’t use the product as directed and it got damaged as a result. Have a good rest of your day.