Not liking interacting with an OS is a fair choice to make, but don't be fooled by the bolted-on specs like "more RAM" when less of it is available to the user due to the built-in software and driver compatability issues. It's almost always slower, older, and less quality. They do Product Binning and give the worst quality leftovers to the built-in machines where people are less likely to notice and because it won't change the brand's reputation. The difference between i9, i7, etc are just how many defects there are- they're printed identically on the same wafers.

Even IF the processor and RAM combined with Windows and bloatware is faster, you know they're going to have to cut corners on things like keyboard, trackpad, monitor, battery, webcams, heatsinks, etc.