The 'laws' are not drafted for 2050, they are drafted for now. The objective, is to make cities cleaner, and the target, or measure to see if this has been successful, is set for 2050.
Are we to get data that tells us 50,000 people die prematurely from the affects of pollution, and conclude we cannot, or don't want to do anything about it?
Maybe a solution which won't impede your access to Marks & Spencer's would be to issue those unfortunate to be pedestrians and old with face masks like we see in Tokyo.