I think that would be similar to the refrigerator issue we had when we first moved into this house.
The home inspector pointed out a couple of outlets that needed GFCI's installed. One was for the fridge. The sellers had an older top freezer fridge. Our new side-by-side w/ice & water in the door was not keeping cold enough. After several calls the repairman talked to the manufacturer to be told the computer wouldn't work with the GFCI. We had to put a dedicated outlet behind the fridge to solve the problem.
So, pretty much makes since that you wouldn't want the power fluctions on ANY kind of computerized equipment.
Now a vintage machine is a whole 'nother story - just like the seller's vintage fridge LOL