I would agree with this. I've been a proponent of Meraki for the better part of a decade, and this is the first I've heard of the PtP capability. Reading through the documentation, it seems like it's a halfway developed solution. There are purpose-designed PtP/PtMP solutions on the market that will perform far better, be more flexible and require less setup time.
Additionally, using this solution has the potential to cause co-channel/adjacent channel interference in a dense Wi-Fi environment. Whenever I implement PtP/PtMP, I leverage a 60Ghz solution to avoid interference.
I personally wouldn't implement this solution for a wireless bridge link.