The bulk update request #13629 has been rejected.
mass update platform_heels -> -platform_heels high_heels
These three tags do nothing but mimic the searches for high_heels boots, platform_footwear boots and platform_footwear high_heels. high_heel_boots is an oldbooru holdover created over eight years ago, and platform_boots is recent but very likely inspired by it. Meanwhile, platform_heels doesn't even have a wiki and only implies platform_footwear.
These tags are akin to something like cross-laced_boots or long-sleeved_shirt or toeless_shoes or star-shaped_sunglasses, all of which would be shot down for exactly the same reason if suggested today.