It's added as part of the dedicated server, and available for all players on the server. This kind of data is also available in game, but not as detailed.
I think it's more interesting on an openttd server, because you're competing against other players, so the graphs inform you about their actions and how well you're keeping up with their economy.
In case anyone's thinking of running some multiplayer games in the coming weeks and wants some more advanced economy metrics, I recently started writing a set of patches to add a prometheus /metrics endpoint to the OpenTTD server to use with a grafana dashboard:
I went to a local RISC-V meetup last night, and it seems like something interesting to play with. Does anyone know when actual chips might become affordable? The only board I could find available at the moment is the HiFive Unleashed, which is $999.