I respectfully disagree.
In a work Zoom meeting Audio quality is of secondary importance when compared with the appearance of the speaker and their surroundings.
That is completely and 100% backwards, for crying out loud.
I have been working remotely for over a year and using video conferencing tools for much of that time. My home setup (iMac) uses a USB microphone (Blue Yeti) and wired over-the-ear headphones (Sony professional).
My experience in video conferencing using various applications (Zoom, Teams, Webex) is that the audio quality is of primary importance, with video quality second (and individual appearance should not even be a consideration).
The objective of these meetings is to have the best possible quality communication between the participants. Audio issues can be common and distracting. For example, participants may still frequently forget to mute (or un-mute). More serious audio feedback is not unusual depending on the setup of each individual, and their hardware/software/connection. All of these issues take away from the effectiveness of the call and the ability to have a group discussion that can begin to approximate more 'normal' working conditions.
Using headphones is one way to minimize if not entirely remove most if not all of these audio issues. A participant who is using headphones should not be subject to audio feedback between their speaker (headphones) and microphone. Their participation in the call should be solely judged upon their contributions, and should not be influenced by technical issues because they are not distracting the meeting with feedback or poor quality audio.
Personal appearance should be appropriate for normal working interactions, but other than that how you look should not matter in the slightest.
Added point - I'm not saying that any particular type of headphones are required in order to eliminate audio issues. I am saying that in my experience they remove that possibility for some of the participants on these video meeting calls, and I appreciate those meeting participants who are wearing wired (or wireless) headphones because I know that their own connection is unlikely to be causing feedback or other audio interference with the discussion.
(edited to improve the clarity of points made)