There were multiple demonstrations of Microsoft Windows Defender (WD) being bypassed in different ways.
And that was a HUGE compliment to WD.
Usually, the bypass demos target the AVs with the reputation of being most difficult to bypass.
Kaspersky has been a long-time demo target. Sometimes Norton or Bitdefender.... In recent years, the 'Next-Gens' have been demo'd.
And this year, Windows Defender is thought of highly enough to be demo'd.
The reputation of WD is changing even in that crowd.