Yep, I have gone through the websites of a bunch of companies, including going through everything on BTCPay Server's directory, and it was very obvious no one has gone through that in a while to purge inactive sites or businesses that stopped accepting bitcoin.

DeltaClimbs

bitcoin

Why are there so few bitcoiner e-commerce businesses???

I was going to link kandc cattle and beef initiative but both of them don't offer Bitcoin as a payment method through their online order flow. 

https://beefinitiative.com/
https://www.kandccattle.com/

Probably have to reach out manually to do that, but that's quite surprising to me. I get Bitcoin isn't the easiest integration but put your money where your mouth is Slim & Cole. 