Thanks JeremyRicci and good points.
A larger customer organisation implementing 365 Copilot for 300+ users is less likely to invest in extensive training for its users at the start. So Copilot may not get the same level of focus and effective use from end users as it would in smaller businesses. In smaller businesses, the investment in the system represents a significant expense, leading to a stronger focus on ensuring a return on investment by thoroughly training users and making sure that they use it. So perhaps this could be a form of damage control (Less intense focus = fewer bugs found. Smaller investment relative to revenue = lower care factor if it doesn't do what it says on the tin).
So maybe it's damage control but they haven't been afraid to release buggy first versions of products in the past...
The second explanation seems less likely to me as their video marketing has had a lot of small business focus in it so I'm going with #1.
Thanks again for taking the time to respond