vacuum manufactures have been advocating vacuuming your mattress well before now.
Check Kirby's owners manuals as far back as possible. So did other manufactures.
Hardly a new concept.
I vacuumed a king size mattress years ago with a Kirby Classic Omega. The mattress was about 20 yrs old at the time. OMG what I pulled out of that mattress was amazing. So much crud it literally caked to the inside of the carpet cleaning head. The owner of the mattress and Kirby thought the vacuum wasn't working right. I said it performed lust like we are used to. There was that much stuff in the mattress and with the reduced air flow is what caused the dust to cake up in the head of the vacuum. They noticed the improvement in the mattress that night. They didn't wake up with stuffy sinuses.