i agree with that, railways have always been here and hopefully still will be for awhile. I usually think of teleporters as laziness from the mapmakers side... sometimes they fit the map well, like in Krose's Savage Realm, the teleporters are organized in a super convenient hub that will be revisited between every area. However, unless they have a great purpose like the hub in Savage Realms, it feels lazy. Railways usually need fun or entertaining views, although sometimes the classic 3x3 tunnel is fitting to the map/area theme.
A great use for teleporters is if you have an isolated spawn point and you need to send the player towards the first area or the first intersection, they can be quite handy. Another use for teleporters is when you have a large vertical shaft. You could put ladders up the shaft, but it takes a REALLY long time to climb those ladders.