Seatbelt mechanisms are complicated, airbag timing is complicated, let's just do away with them entirely in the name of simplicity?

No, when it comes to not killing people, I'd say that safer is usually better.

Remember the core function of the system is safety, simplicity is nice to have, but explicitly not as important.

That said, beware of calling something 'complicated' just because you don't understand it, especially if you don't have training and experience in that thing. What's more relevant is whether the people building the systems think it is too complicated.