They were also incredibly easy to clean. Whoever designed it was intimately aware of both the struggle of cleaning a grill grate and not being able to fit pans in dishwasher or standard kitchen sink.

The predecessors to the Salton design in the 80s suffered this problem. The hot sandwich makers and grills with no drainage had depressions that were hard to clean. They learned from the flawed competition.

https://www.youtube.com/watch?v=-5JchC0nQcM

A countertop kitchen receptacle circuit should have no other appliances on it. Best practice (well, NEC requirements to be fair) is to provide a separate dedicated circuit for 120V kitchen appliances like refrigerators, microwaves, dishwashers, and garbage disposals, and two or more separate 120V 20A circuits for countertop appliance receptacles, which can handle 1800w continuous load. Of course, older housing may not be wired this way.

A washing machine should never trip a breaker, if it does, there’s something wrong with the washing machine. Washing machines (typically) do not have heating elements in them, hot water is obtained from the water heater.