Thanks for the response.
I thought long and hard about it, and the only two add-ons that have access to my LND REST address and admin cookie (aka macaroon?) are GetAlby and Zeus.
With Zeus, presumably the cookie would be stored on my phone. No third party should be able to access it, correct?
With GetAlby, I'm not really sure. It's a PC browser-based extension, so hopefully it's stored on my computer locally, as opposed to an Alby server?
I never gave such issues a great deal of thought until reading this fellow's horror story. Just trying to tighten up my OpSec game a bit so as not to repeat his mistake.