The best-laid plans of mice, men, and homicidal robots often go astray. Ultron hacks a teammate's wi-fi signal. Some player leaves after you don't capture the first point fast enough. Maybe your bronze lobby suddenly encounters Cloud 9 on their smurf accounts. For all these and many other reasons, Rivals is making it easier to surrender.
Previously, a team with five members remaining would require a unanimous vote. Have you tried getting a unanimous vote on anything in the current political climate? For a full squad of six, five votes will be required to surrender. Teams with only five or only four members can also vote for surrender if one member objects. Once you're down to two or three, it will need to be unanimous. And at that, why in the world wouldn't it be?
The obvious problem is that this will encourage some people to give up quicker. I have had a lot of great comebacks in Marvel Rivals and other games simply by not quitting. In a game of so many superheroic explosions and ultimates, things can turn around mighty fast.
But the thing I've realized, once somebody calls for a surrender vote they have already given up on the match. There's no changing their mind, your rank points for this match are gone. Someone ready to move on to the next match isn't going to suddenly change their mind and start healing, tanking or DPS-ing. They're going to stand angrily in spawn and wonder why you're wasting their time.