As a new player that recently completed Queensdale here’s my take-
When I kept seeing people ask in chat where the train is I assumed it was a real train, perhaps one that took players to other areas. I wondered why the stations weren’t marked on the map.
Later I bumped into a group of players and joined in killing the boar. I certainly wouldn’t have attempted it on my own. I noticed that all the players in the group were level 11 which I thought odd, as I was the only level 10 there. Afterwards some kind chap explained the process and waypoints in order. I attempted to join in but kept losing my way or arrived too late. Eventually I just stayed by the tree-beast chap and waited for the train too catch up which then got too boring.
It was all rather exciting for twenty minutes and I certainly didn’t feel higher levels were ruining anything for me. My only concern is that if leveling up at higher levels is so tough or dull that one is willing to do the Queensdale train it must be very bad indeed.