https://dailyhive.com/vancouver/canada-line-broadway-city-hall-station-platform-extension-millennium-line-interchange Fortunatly, the planning for the TTC Subway, Montreal Metro & Edmonton LRT, all have much longer stations than what backwards Vancouver settled for.
https://dailyhive.com/vancouver/skytrain-canada-line-rebuilding
Once all of the YVR-Canada Line stations have 50-metre-long platforms, it will become quite apparent that the long-range planning for 5 car trains wasn't seriously considered. The 50 m stations will only be long enough for a 2.5 car joke of a train.
However, there is a potential to work around this particular manifestation of the Vancouver Mind Virus. Selective_door_operation can allow for longer trains, despite the ridiculous short Vancouver stations.
https://en.wikipedia.org/wiki/Selective_door_operation#International_variations
There is such a problem with Vancouver and BC in general of not properly planning for future transportation infrastructure expansion.
https://www.railforthevalley.com/latest-news/zweisystem/the-skytrain-lobby-get-over-it/