Sean Carroll, who knows a thing or two about quantum mechanics, says the Microsoft topological quantum chip is a nothing burger:

https://www.youtube.com/watch?v=Joe9Zl9mihk&t=6424s

Granted he’s a physicist rather than an engineer or materials scientist but still it sounds like MSFT embellished a wee bit. Maybe this circulated around Nostr and I missed it but sharing just in case.