It’s true that most of us have stone countertops that can withstand heat, but I think (preferably) modern trivets still have a place in the kitchen.
Not long ago I put a Pyrex baking dish straight from the oven onto our granite countertop. It was wet. The entire dish, salmon included, exploded. Seriously. Exploded.
Many kitchens, including mine, mix countertops, using a different material for the island than for the rest of the workspaces. The ship-like cherry wood countertops on either side of our stove are scorched from the tea kettle. (Not my doing.) I leave a cork trivet nearby now.
And unless you have have a marble-topped Saarinen tulip table you don’t want to be putting hot dishes on your dining table.