I think that surprises me even more, because aren't 'toaster ovens' - essentially duplicating grills/'broilers' - already commonplace? So this trend is a second appliance to partially duplicate something a third, in many cases, already does.

Personally I think I'd rather just replace the oven for one with a fan and grill, reclaim all that countertop, but at this point there is probably just a large cultural factor at play.