[ryukafalz]

Anecdotally, I can confirm that this is probably the deciding factor. I use a Yubikey daily on both macOS and Linux - Linux smartcard support is rock solid, but it's really spotty on macOS.

[xur17]

I have noticed the same thing - on OSX I have to kill gpg-agent once or twice a week, and smartcard operations take noticeably longer.