It is more the rule than the exception that any service using AIs are less usable than the previous solution. That is, unless you think about how usable they are to extract money from gullible investors or for making laughing stock of their users and/or developers.
In fact I while I'm certain they exist I cannot right now come up with a single product that I use for anything other than fun or creativity (games, painting) that have been improved by recent AI additions.
Thinking of it maybe maybe Google Translate qualifies, but that depends on how you define recent.
Oh, and by the way maybe there is something that qualifies as AI in some of the new translation web applications I've seen recently.
And only for so long.
DuckDuckGo.com is rising exponentially and have been doing so for years. Ans yes, mathematically exponentially, not cool kids speak or journalistically exponentially: https://duckduckgo.com/traffic
They do not have an information advantage, just a political one.
And we can see how concerned the general public is with taking control of politics for its gain. It very clearly prefers to be hands off and let a minority manipulate public agency for their gain.
edit: well this appears to be unpopular. It's a preview release, nobody is using this in production. They are offering the tech for free while they kick out the bugs and determine where things don't work as everyone expected. The fact that this is doing things they might not have expected suggests that this part of the process was necessary.
If you expected this to be production-ready, then you've misunderstood the purpose of a preview release. This applies to MS the same as it does any other developer.