I can totally understand the reservations about this system, but I don't really understand the criticism of the player. I think we can look to the Betis game as a template for how Ten Hag wants us to play, and Fred playing high up was key to that.
The first highlight is his
cross for the offside goal, he was just behind Weghorst for
this cross, for Antony's
goal he was the only player in the box alongside Weghorst, he was the furthest forward for Antony's chipped
miss, and generally speaking he was ahead of Bruno.
Whether that's the right shape or not is debatable, but it seems clear enough that Fred was not the ideal player to occupy that role. He allowed us to suffocate the opposition when in possession and pull apart the opposition when on it, and most of that was by doing the "invisible" work that's being attributed to Mount now. When things got a bit more visible, he was liable to give away dangerous passes in dangerous areas and he was always likely to miss his shots.
The idea that he was primarily a defensive player alongside Casemiro just isn't true, he more often played in an advanced role in the second half of the season as Ten Hag started to move towards this shape. He was even praised for runs in behind by the manager, after the Barcelona game:
And that game against Barcelona was one of the ones where we pushed Bruno out wide. It was clear in the second half of the season that we didn't want to play with two holding midfielders and Bruno in front as the #10. We wanted Casemiro to hold with two advanced midfielders. Seemingly to press the opposition better and to be more of a danger in transition. Fred did some parts of that really well and some parts really poorly. It's an unconventional role so I wouldn't hold that against Fred so much. It's the kind of role Mount has a much better skillset for.
If you think that Bruno suffered today then we must've been watching a different game. He played a lot of great passes and he always benefits from having runners around him.