I haven't, but I'll take a look. My completely green suspicion knowing nothing about it at this point is that it's probably just a step up in an arms race, to which more advanced statistical techniques could be developed and applied to eventually, which means past transactions using old methods are vulnerable to being traced. I'd be happy to be proven wrong though, so I'll take a look.
Edit: As suspected, it's not a silver bullet.[1]
1: https://cointelegraph.com/news/bitcoins-taproot-upgrade-wont...