Earlier quoted context omitted.
And? For desktop use it doesn't matter. If you're not paging out of ram you will never ever notice. I'm not sitting here running disk benchmarks all day... I'm browsing some web pages and using a text editor.
> If you're not paging out of ram you will never ever notice. What you say is true but you didn't respond to someone complaining about ram latencies, you responded to someone lamenting poor disk access perf. And you recommended booting off SSD which is demonstrably specious advice.
Booting the Pi 4 off a quality USB-connected SSD to address stability and performance concerns is really good - and normally not controversial - advice. You're betraying a lack of familiarity with the subject matter here. The Raspberry Pi people provide a whole forum where people can discuss this, and other, stuff and educate one another.