This doesn't sound like an Excel problem it sounds like a management/software upkeep/bus factor problem.
I'm going to be the odd man out and say that Excel isn't even that bad: I use it a lot for RPG simulations and engineering simulations, and not just because CSV is normalized. It can be part of the tech stack, but not in a mission critical way. There's really no tool like it especially if you are doing simulations.
This doesn't sound like an Excel problem it sounds like a management/software upkeep/bus factor problem.
I'm going to be the odd man out and say that Excel isn't even that bad: I use it a lot for RPG simulations and engineering simulations, and not just because CSV is normalized. It can be part of the tech stack, but not in a mission critical way. There's really no tool like it especially if you are doing simulations.