We last visited Lauterbrunnen in 2018, and just returned from a short visit to the Berner Oberland. There were huge crowds on the main street in Lauterbrunnen heading towards Staubbach Falls, and cars driving at fairly high speed in the same direction.
I also observed that more often than not, cashiers in stores, bus drivers etc in the area seemed to be quite rude, a big difference from Norway (which we visited before flying to Switzerland), where everyone was very friendly and most people spoke English. I can't imagine how things will be in Lauterbrunnen, Murren and Wengen in a few years from now.
Regardless, we thoroughly enjoyed our hikes in the area.