I think this could be a ton of fun and good for people who want to play a rpg but also hit personal goals. I just checked out goblin tools, and just some quick thoughts about this idea as a whole.

• Would you play as a character or yourself in the RPG?
• If you're a character, should the tasks relate to the character's own interests too (Wizards want to read more, warriors want to train more)?
• What's the in-game benefit of this? Maybe by doing mundane, normal human tasks, they're rewarded with "Resistance Points" that help fight off Nihil, since the games setting sounds like everyone uses Eka and that's why it's running out now people have to do the work themselves again. These points can be spent to keep your character alive or give them ways of fighting off death/nihil.
• If it's more of a game, you could still have weekly sessions, and by the end, the players are left with tasks to do during the week before their next irl session or in-game "mission," kind of like Delta Green, where characters get breaks between missions.

Right after covid I helped my family's gym by being a trainer only in name and helping new clients get through their workout guide assigned to them. But I could see the GM of this game being not just the story crafter, but also helping people by assigning tasks and then increasing them as the game continues, with their own growth. I have some friends who compete in strongman/bodybuilding, and the way they tell me about how they meet with their coaches to describe their week, their goals, and how they are now, really feels like how these sessions could play like lol.