There is this interesting article about the management at MercurySteam (Spanish source).
I'll translate some interesting tidbits and update the OP.
-Co-founder Enric Álvarez made a video message to assure people they had job security, then soon after fired most of the QA staff and a good chunk of 3D artists.
-Between April and June of 2020 Nintendo checked on the game and cut about half the bosses and cinematic planned for the game, with another cut made (Started by a MC programmer) to the scope of the game back in 2019 among other things, to avoid crunch..
-No crunch is a MercurySteam policy.
-Employees are not allowed to talk bonuses and are punished if they do so.
-salary seems to be €25, 000 for junior positions and €28,000 seniors
-Employees are punished by forcing them to work in isolated offices or switch groups.
-The pandemic made management and work from home chaotic.
-The company tried to skip out on paying pandemic-related bonus salaries. They did pay it at the end.
-The people interviewed seemed proud of working on the game but don't feel valued by the company.
-MercurySteam, as a company, is characterized as managed by people who play favorites with employees, and who punish those who go against their philosophy, as evidenced by taking people out of the credits of the game.
-The workplace environment between the same-level workers was great.
-The people that worked in the game, even if not credited, are still proud of what they made.