This is one of those things that still makes me scratch my head. When I started programming my code ran on a 2-4 thread machine with a couple GB of ram because that was the size of a relatively affordable commodity server. Today my code runs on a 2-4 thread pod with a couple GB of ram because... reasons I guess.
The industry has been given servers with 100x the resources and collectively said "naw I'm good". Can't wrap my head around it.
Devs today don't know how to write software that doesn't immediately balloon to gigabytes of memory use for a "hello, world" application. Seriously, they've just never done it.
So that even if you're building small website for your local soccer club it's probably run through GHA on every change with a full red/green deploy process, run on autoscaling groups and so on.
Never mind that most of these applications' databases could fit into RAM on a single server with 24 cores and never even touch the system limits.