I can't say for certain, but it screams "middle-management justifying their MBA salary" to me.

Probably so that they can restructure the site to push different products as some are heavily backstocked and others are running low without people noticing the changes. If i had to guess.

Maybe they believe that most of their customers don't really know much about computers beyond turning them on and "bigger numbers = better". They might not be wrong.

I hate how dell has restructured their product lines recently. It's very unintelligible now.

Because that’s how people buy them?

Home users want cheap garbage with fast graphics for gaming. Business users want consistent reliability at a moderate price. Creators want high res graphics and don’t care what they pay.