It's the principle of the thing; and anything that shaves off a few clock cycles is fine by me.
I have no skin in this particular game, but I'm glad to see the work being done.
Data Collection. The software may collect information about you and your use of the software, and send that to Microsoft. Microsoft may use this information to provide services and improve our products and services. You may opt-out of many of these scenarios, but not all, as described in the product documentation.
This seems to have lead to development of products and features that get a lot of excitement here on HN so maybe it's not all bad.
And for either of these projects, I wouldn’t use their products without first verifying they are what they say they are. I’d do this by downloading the vscode repo and building directly from source then comparing. But at that point I have two of the same thing (hopefully), so not sure why this is needed in the first place.