Either Orisa’s shield or the incline it was on canceled out Rheinhart’s Earthshatter and, seeing as how a recent update said inclines don’t stop Earthshatter any longer, it must’ve been the shield. But it wouldn’t make sense for a shield that is on top of the ground to stop an earthquake.
There should be a mechanic to read how long is left in a game before putting someone in it. I know I would rather not be put into the last thirty seconds of a losing game and have that stuck on my record when I had no hand in any of it.