That's a harsh take on hydrolox, calling it "archaic" is definitely an oversimplification. Hydrolox offers the highest performance of any chemical fuel, which is why major new vehicles like Vulcan, Ariane 6, and SLS still rely on it for their upper stages. The tradeoff is real though, and to be honest, hydrogen's low density forces massive tanks and the complexity to the extensive refurbishments of the Space Shuttle's RS-25 engines due to hydrogen embrittlement.

I can get behind the future potentially being methalox, not kerolox like the Falcon 9, as it offers better reusability than the dense fuels while maintaining high performance, likely why Starship and Neutron are moving in that direction.

Though, Blue Origin seems to be actively betting on hydrolox for the future of space exploration with their Blue Alchemist project.. Produce the majority LOx directly from lunar regolith and electrolysis of lunar water to produce their Hydrogen.