"the test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function" -- F Scott Fitzgerald

Personally I loathe people who use their phone speaker in a restaurant (or doctor's office, etc)

but I made my peace with it by adapting:

https://www.amazon.com/dp/B008MCTOPU (3m ear classic 33 NRR earplugs)

The perpetrators never notice me putting in the earplugs, but others do and smile "I know, right?"

(although another adaptation might be putting on a disney princess song or maybe ukulele music. can you steer the sound?)