Booking a restaurant is generally ok by phone but if you try to do it online you often get some crappy random website that’s different every time. I can imagine a world where you do it by some messenger interface which somehow Facebook make hard to fuck up for the business. I can imagine that being good, half good (I think there are roughly two kinds of booking. One starts with criteria about date/time/occasion/party/budget/location/cuisine and looks for available places and the other starts with a specific restaurant with other particulars relatively free. An experience might only work well for one), or bad. But it isn’t obviously bad.

Much as a decentralised Internet has good properties, having every small business outsource a nontrivial online presence to a bunch of crappy other companies that lack the scale or incentives to do well is not one of them.