I think it's mostly Engie being assholes and covering their ass during the energy crisis this winter by overestimating the provision they charge.
I mean last summer I was still on a fixed plan with a provision of 90€. I left my thermostat between 18 and 20° and only in the evening but still...
I dual boot Mint and Win10, and I find myself using Mint for everything except gaming. Helps that I'm currently doing a dev bootcamp so Linux is so much better for coding.