There was a vogue in the UK for such teemarkers some years ago even if the course didn't need explanation. I think they fell out of favour when vandals started nicking them.
It's not quite the same thing, but when it was decided to re-introduce names for the holes at Hartlepool it was decided not to put the names on the tee markers as this would attract vandalism. The names were printed on the scorecard, however. I'm afraid vandalism on golf courses is rife in or near many of our bigger cities. There was a fashion for driving stolen cars onto greens and setting fire to them a few years ago. Most city clubs have to bring in flag sticks and rakes at the end of play, even benches, ball cleaners and so on. There is increasing theft of a player's clubs and bag actually while they are out on the course. The thieves are also usually getting away with car keys, credit cards etc. There was a run of these thefts from the 8th tee at Wilmslow a few years ago. There was a lay-by on a minor road close to the tee, but hidden from it by trees. The thieves would lurk there in a van, spring on the next four-ball that came past, take their possessions and by the time the players had made the 500+ yards back to the clubhouse to raise the alarm the thieves were already several miles away and about to strike elsewhere. But, then, the crime statistics for Europe which were published the other day showed the UK to be the worst country in Europe, so it should not surprise us.