About memory use: macOS has had quite a lot of optimizations. Transparant memory compression, swapping and given the fact a lot of apps are coded in objective C

About memory use: macOS has had quite a lot of optimizations. Transparant memory compression, swapping and given the fact a lot of apps are coded in objective C/Swift and running native code without VM's, garbage collectors etc they don't seem to require as much memory. Of course, if you insist on running Java, Electron or other wasteful frameworks you will have a worse time, but even then 16Gb can be enough. For the 'standard office' user running Safari, Mail and Office 16 (or even 8) Gb is more than enough.