So I searched a bit and this link has a few suggestions: https://www.blister-prevention.com/blogs/prevention/holes-in-the-back-of-my-shoes
TL;DR you can have a deformity on your feet called Haglunds which can worsen wear on the heel counter. There is also a possibility that you can relace your boots or use padding to reduce wear.
I love how that article had plenty of other explanations for why a person might wear out their heel counter, but you jumped straight to him having deformed feet lol.
I had to read that link to learn what a counter is.
It might be that your foot heel is unusually prominent. I'd be trying a gel cushion or pad on the inside of the shoe, which you could replace if worn out.
Huh, fascinating. I've never worn through that part of a shoe in my life. I do always wear down the tip of the right heel so it's uneven, but it 100 due to my gait.
That happens to me with padded structural sneakers. I switched to shoes that aren't structural (Nike Flyknit, Merrell vaporglove) so the soft fabric of the shoe moves with my foot and hasn't happened since.
The leather counter in dress shoes also seems to be more durable as others have said.
