Kaido and Mom could probably survive in lava if they were healthy and conscious but in their current states I don't see how they get out of the lava and if they do get out there's quite literally no possible way they would be in fighting shape. How would they even breathe? It's not like they can haki up to defend themselves while they're K.O'd. Do you think they can just straight up drink and suck magma down their nose?
Oda is actually doing some justice with this chapter:
1. Luffy won with major help from the Alliance, which means Kaido is still the strongest creature.
2. Wano is ending, Kaido is finally defeated.
3. Luffy is the strongest alliance member with Law close behind.
4. Logia/elemental magma hype sets up nicely for Admirals to still be a threat
How old are you? I am in my late 20s. In India, they started teaching us computers when we were in 6th grade—although I admit it's not available in most schools. I was familiar with computers much earlier than that though.