The thing is net operators will continuously learn and adapt as renewables grow. More transmission lines, dynamic load management, storage at critical points etc. will be implemented as the share in renewables grows.
I didn't say it will be quick, but I think for example that Europe having 95% renewable electricity generation by 2043 is an achievable goal.
I do not dispute the forecasts - i've made several myself. I'm simply disputing that "possible" implies "simple" or "easy".
When you say Europe reaching 95% renewables, what you are referring to is western europe. The road to even 50% renewables is much more difficult in eastern europe. The further away you move from the Benelux countries, Germany, the nordics, the more coal there is, the more gas there is and the less transmission there is. Building transmission lines takes decades from start to finish.
I didn't say it will be quick, but I think for example that Europe having 95% renewable electricity generation by 2043 is an achievable goal.