Yes, but that may not matter if the total duration is kept very low. Many IoT-type radios use the same 2.4Ghz band as domestic microwaves and will be destroyed

Yes, but that may not matter if the total duration is kept very low. Many IoT-type radios use the same 2.4Ghz band as domestic microwaves and will be destroyed in a fraction of a second as the radio's AFE (analogue front end) is hit by many many orders of magnitude more energy than they're designed to tolerate. I would wager that many devices that don't have other significant "energy-catching" features (antennas, radios, coils for NFC, etc.) would work just fine after experiencing a short stint in a microwave. I did actually test this once on a very old 3G modem/radio interface and I found that every part of the interface seemed to function just fine, except that it could no longer receive any radio signals (and may have been unable to transmit but I couldn't confirm this with a spectrum analyser). The modem otherwise operated just fine and would talk to the SIM, operate all its LEDs and even seemed to pass an internal self-test feature that it had, with the obvious exception that it could no longer find any radio towers. I obviously can't guarantee that your stuff won't blow up, so don't come blaming me when your device ends up being trashed by microwave energy going through unintended parts.