Will anyone stop filming trains on the train station platform?

Oh, it depends on the actual situation.

If you just record for a short time out of curiosity, the staff won't stop you. Once the time is too long, taking pictures of the structure of the locomotive (front) and axle parts may attract attention, and the staff will come forward to ask, as long as you have sufficient reasons, it will not stop you.

Of course, it also depends on the social background at that time (whether there are hidden dangers of riots) and the service attitude of the staff.

I believe that as long as you can gain their trust and have a good attitude, you should not interfere. Wish you all the best! I hope I helped you.