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Since I dropped running D&D, it's not my personal concern, but I have an extreme huge doubt about them to put actually useful information in that chapter. They failed on it in the first DMG, and other books that related with planar information.
I don't know if they can gather data for Foundry VTT and Fantasy Grounds, but Roll20 definitely has data for opened game rooms. Couldn't find the correct stats in the forum somehow, but internet has something like this.
This kind of issues were foreseeable. Official content of WOTC was getting worse and worse with every new sourcebook, we already know about their behaviour to freelancers, and they're faking "supporting minority groups" for a couple of years as a marketing trend. I wasn't like it much already...
That would probably be a divine campaign and they would take hard times while achieve great informations. But it looks like the party will make hard times for a DM.