directory links are still a very much required part of the deal for major directories to say the least. Sure, a lot of them do not pass any link juice or Google may discount a lot of those links in its ranking factors, but you just want to be present where people actually check and where data aggregators grab their source data from.There has to be a reason why Moz local still is as service that charges people for exactly these "directory" listings...

direct traffic can be from bookmarks and such, as well as it could depend on proper implementation of ads and retargetting too.

That does seem a bit odd of a coincidence though, I have never dealt with such a switch scenario like that and to that degree, I have only seen more negligible or at least less worrisome amount of such changes in the past which we ended up not spending time to find out what was the underlying sitch with it as it corrected itself as a trend after a short period of time.