Why 6 airbags do not need to open all at once regarding recent Swift Crash

https://preview.redd.it/9hes0bkoqsbe1.png?width=277&format=png&auto=webp&s=695762c2120f72c8a14fec573aaf6e1eb5e0b23d This in an excerpt from the Brezza Manual which also comes with 6 airbags.