I’d be uncomfortable with an Irish player deliberately handling the ball into the goal in an Ireland match. I don’t like diving either but there are degrees to which I don’t like it, from outright deceit to playing for a careless lunge or going down to make sure the ref knows you’ve been fouled or impeded.
But what really rankles with the Smodics thing is doubling down on the incident and vigorously protesting innocence to the ref who actually called it 100% right and imho Smodics should have accepted it.