You don’t have the same hardware, drivers and software as him. Off course you would not know what he is talking about then.
Hardware was why I went virtual. Before that, for a decade, I ran Linux bare metal, but was spending days recompiling kernels and drivers and futzing around with non-productive activities. Every upgrade would start the cycle again.
Once I went to VMware all those issues went away.
Now that new owners have taken over, it appears that I’m going to have to find a new solution.