To be fair, that's a C# 12 feature that came out three weeks ago
Perhaps it illustrates they have people giving demos that don't actually understand or notice obvious discrepancies? This doesn't inspire confidence.
Yes, this feature's only been 'out' for 3 weeks, but obviously the resharper team knew about it ahead of time and had a definition of the feature to develop against. Are we saying the AI can only be trained on 'released' stuff, but other tooling can work against upcoming specs?
I wouldn't call this learning, anymore than me knowing how to use a + screwdriver allows me to use a - screwdriver as well, but others might.