I write text in a text editor all day but would still upgrade my machine on a regular basis. I have a Threadripper and use all 32 cores everyday. I'm still debating on whether or not to upgrade to the new generation released yesterday. 4 year old CPUs are not speedy.
You'd be surprised at just how slow running zellij in iTerm was on an Intel MBP. Somehow in 2023 we've managed to create resource hungry text interfaces.