No, it's really a terrible thing -- both for what you noted, and the fact that if a relationship sours it could impact coworkers.

Any given relationship sprouting from coworking isn't terrible, but in aggregate, I think it warrants a decent amount of frowning.

It’s a good way to meet people with shared interests. Everyone with more free time, not everyone wants to attend meetups outside of work. Not saying meeting at work has no downsides.

It is if the divorce rates are lower than the average, it isn't if it's higher (indicating less-optimal marriages due to lack of social life)

It’s probably better than relying on Tinder.

Maybe people work at the same place because they have similar interests? We are not randomly assigned where to work, it is a personal choice. Is it better for couples to meet when they're out getting blasted on the weekend?