That’s surprising. I use Airpods Pro for teleconferencing at work all the time. One of my co-workers also used the Airpods Pro but switched to the Airpods Max recently. To me it sounded like he switched from a decent podcasting mic to a speakerphone. Most noticeable was the Max picking up lots of room reverb. I guess if you have a treated room it would sound better than the Pros though.