True, I've been there many times, it just burns you out, many times I actually decided to leave before even finishing all the rounds as it was just too much.
Even worse, sometimes you actually go over the 7 rounds, spent days of your life attending to hours-long interviews and making full "take-home" projects, and you don't even get a response from the company, or if you do they won't even give you any good feedback to improve, but rather just a "We decided not to continue with the process"