Although clearly different in your world, to me serverless meant that it can run without a central server (it was used in peering systems, eg games in the 90's,

Although clearly different in your world, to me serverless meant that it can run without a central server (it was used in peering systems, eg games in the 90's, and co-distributed systems workers sharing info - a bit like block chain in the 00's). Occasionally, it was used when the app was working offline. I think it highly ironic that the marketing hype just upended what's really going on. The new stuff's 100% server bound, as most people realise.