I built my Gen Z nephew a PC with a GTX 950 a few years back. When I went by to gift him a new video card I found out that he hooked up his video output from the motherboard the whole time. Don't know how that reflects on all kids from his generation but it was kinda funny.
Idk, i specifically plug it into motherboard since i use cheap used gpus that can break easily, example is Nvidia p106, it doesn't even have video output, and it's easier to flip DRI_PRIME from 1 to 0 than redo the cables