For Airbus, there is currently no requirement to use a STCd or TSOd headset. The subject matter was pulled from all documents and the last circular for "approved" headsets is almost 20 years old. From an aircraft point of view, a headset is a consumer of audio signals arriving at the comms jacks in the same way a phone/laptop/tablet charger or vacuum cleaner is a consumer of electrical power from the power sockets. We don't see anyone getting over excited about TSOd electrical consumption devices. A headset is not a permanent fixture and is not going to fry the circuitory.
Any limitations imposed by airlines are to cover their own asses for the benefit of nothing but much annoyance to flight crew who want decent ear protection without crushing their heads (I'm looking at you Bose A20).
I have used the QC25 for years. Last chief pilot said he was not going to talk about the subject. We had onboard headsets and as long as they were connected back no one would say anything.