Ah looks like you’re right on that one. I thought that it could be used with the website.
Re:DuckDuckGo Expands Use of Apple Maps
by wool_gather on Wednesday July 17, 2019 @11:52AM
(#20460791)
This would be due to a "universal link"; that's something that Yelp set up on their domain. It's possible that it wasn't there in the past, so you may not be misremembering at all.
You sure about that? For me tapping on any business info takes me straight to the iOS app store.