Well to me this seems like a passive solution that would convert most people who right now aren't using seatbelts to use them. Now, if some are trying to active

Well to me this seems like a passive solution that would convert most people who right now aren't using seatbelts to use them. Now, if some are trying to actively be stupid about it - I guess nothing in the world can prevent that. The best the designers of products can do is "make them as safe as possible by default". There will always be people who actively work against those safety mechanisms though (like people turning off their ESP for that extra "sports-like" performance for their car - in urban traffic).