One way you could interpret this (definitely not the only way) would be that Microsoft - or some group within Microsoft - sees C++ as a possible legacy system, with an opportunity to make a lot of money by judging correctly what customers want and how much income you need to justify that support as existing offerings rust out (so to speak).

Do you have any particular CPPCon talks to recommend ?

My favourite is "Abseil's Open Source Hashtables: 2 Years In" by Matt Kulukundis, Matt's a fine speaker but what makes it so fun is that Hyrum Wright is in the audience yelling interjections as a result of Hyrum's law (this is scripted). For example Matt explains a significant size optimisation for people who only have a few things in their map, it's just smaller with no other consequences - right? Hyrum points out that now rehash happens earlier, so if you depend on it not to invalidate references during the first 15 insertions you are screwed. Guess whether any real Google code did that...