Yeah high CO2 concentration is probably making people less sharp, but mostly I've heard it's about people being less creative due to consensus-driven thinking
Per https://twitter.com/emollick/status/1194301106584616960:
> People in groups self-censor and anchor on each others ideas, reducing creativity.
Also can be anti-inclusive when "anchor on each other idea" is a euphemism for that guy repeating what a more shy person said, but louder, stealing credit.
With remote, usually comes a more doc-driven culture, where someone's original idea can be easier to identify and make sure they get credit.