320x200 being an area of screen not much larger than a postage stamp on my 4k monitor.
The technical leap from 40 years ago never fails to astound me.
I think it's a valid view that (a) we have way more resources and (b) sometimes they are badly used in ways that results in systems being perceptibly slower than the C64 sometimes, when measured in raw latency between user input and interaction response. Usually because of some crippling system bottleneck that everything is forced through.