Would changing an ignition switch affect the operation of my seatbelts

I see so many problems with ignition switches, keys being stuck in the lock, keys no longer turning in the switch and switches not operating correctly. These problems are seen not only on older cars, some models as late as 2006 have been affected.
The most frequent cause of these problems is that drivers have too many keys on the bunch that the ignition key is attached to, including remote controls and often a heavy decorative fob. When driving the vibration of the engine plus the bouncing due to road surfaces places a considerable load on the key in the lock and subsequently on the tumblers and the slots and guides in the keyhole - severe wear taking place rather quickly and consequently the profile of the key and keyhole details are changed until you normal key is no longer recognised by the lock.
If you are forced to change the ignition lock for this reason, you will have the added inconvenience of having different keys for the ignition and the doors.
To prevent this happening, reduce the number of keys on your vehicle key bunch to the least number of keys you need for the operation of the vehicle.
It will mean that you will have to have two separate sets of keys, but this is a small inconveneince compared to not being able to use your vehicle or not being able to get the key out of the lock.