Because you usually don’t want to do automatic upgrades across major versions. There is a “latest” equivalent for each major version release though.

If you are editorializing the headline already, could you at least call it “Worldcoin” (the original and better known name) and not just “World” which is really confusing?

Sadly this. I have a graveyard of nice server boards that I got cheap before realizing how power hungry they are.

For CPUs basically anything older than gen 6 intel is too power hungry (although be careful with Xeon and xeon derived cpus, that are sometimes older gens rebadged as gen 6).