Apple Watch stalls-out when a plethora of authentication requests come through

Ah, thanks for clarifying that. Looking at your comment, I'd recommend to move the op calls that require authentication out of your shell profile. The CLI has an even stricter authorization model than SSH does, and wasn't really built to use in global shell profiles.

A better approach I'd suggest looking into is to use op run. Instead of loading every secret into every shell, you'd load your secrets only when they're needed. This works nicely with aliases, e.g. alias terraform='op run -- terraform'. And if you then run terraform, that's the moment you'll get prompted.