Some validity there sure, but I‘ve had shaky build quality on Macs and iDevices too. They are not built the way they used to be. My family uses Windows machines so I can always sell them cheaper or hand them down.In my experience, having a Windows is somewhat luxury expenditure: because it doesn't hold value so well as Apple products.
For example, i bought $1000 Lenovo and it has some problems with build quality. Luckily i have a return window until january. In case if i wouldn't return it, then i will be "stuck" with a Win laptop - because nobody would be willing to pay me close to $700-1000 for my used laptop. And when finally after 3-5 years I will be ready to replace it with newer model, i will get almost nothing for it.
With Macs your are saving yourself some money when upgrading in the future, because they hold their value well because of the hype around it and of course build quality.
That said, the Mac Mini set ups mentioned here sound great. Always wanted a Mini, but I’ll wait. The 16gb Mini would be plenty for me Mac-wise now.