Good point, it is.

I'm not sure whether GateGuru is displaying restaurant reviews mirrored from TA?
It they are, TA is shooting themselves in the foot by deleting restaurant pages.
To me it doesn't look like a grand master plan, just some over zealous support drones interpreting the listing guidelines too literally.
Here's the corresponding thread over at the TA community forum:
https://www.tripadvisor.com/ShowTopi...or_better.html