The only two components in a laptop that are essentially guaranteed to fail in a short-ish timeframe are flash storage and the batteries. As long as these two are replaceable, I think a device is reasonably "repairable".
While there's a definite chance of the CPU and memory etc. failing, I think for most people the trade-off in size and weight to accommodate sockets aren't worth it from a repairability perspective.
That's where I draw my line, anyway. Flash storage and batteries are essentially guaranteed to fail in 5-10 years of use, and absolutely need to be replaceable. As long as the build quality is decent, the rest can be integrated.