Plea to the devs: please do not ruin this game with blueprints; there's no need for them, and if you balance around people having access to them, it will ruin the game for everyone else who doesn't use them.

There's no good reason, neither for the lore nor in the gameplay.

To the OP: If you want blueprints, go play the factory games... where they make sense. Factorio, Satisfactory, Dyson Sphere Program...

Otherwise, I'm on the "git gud" team for the first time... ever. Follow your own advice, and get better. Learn to build, or at least learn to copy those who can. Blueprints would absolutely destroy this game.