Neither of those sources really disagree with what I said, though I do appreciate you adding the additional context because those things are worth knowing about

Smart speaker research: Security researchers have documented potential vulnerabilities in smart speakers and voice assistants.

• Mobile security: Documented cases of spyware accessing device microphones have been reported.

• Enterprise security: Organizations have reported incidents involving unauthorized audio access.

• Application permissions: Studies have shown some applications requesting unnecessary microphone access.

None of those are really the widespread, passive, undisclosed listening for advertising data that people imagine there to be and that OP appeared to be asking about. The google and apple lawsuit is about google assistant and siri triggering unintentionally, which is a feature that discloses its always listening which I mentioned at the very beginning

https://www.eff.org/deeplinks/2018/04/facebook-doesnt-need-listen-through-your-microphone-serve-you-creepy-ads old article but the eff is pretty reputable

https://www.cnet.com/tech/services-and-software/features/no-your-iphone-isnt-listening-to-you-heres-but-the-truth-is-even-worse/ from 2025