I used to think this way until recently. I literally have an engineering degree in electronics and it takes me hours to research a compatible set of components. A lay person stands no chance!

A couple of examples off the top of my head: AMD RX480 power draw exceeds the pci-express current limit specification and bricked motherboards, hence I bought/overclocked an RX470 instead. Intel 6700k overclocking. Wow. Reading and understanding the thermal and power envelopes described in the 300 page datasheet difficult for me, it would be impossible for a lay person to comprehend.