Bitcoin might still continue to go up for a while, even if a major correction is to happen next. But to invest in it now seems like a very risky thing to do. Technically it doesn't have the qualities to sustain in the future. Waste of energy, high fees, high volatility, long transaction times... Should I go on? It's only due to its name that has kept it up so long in the first place.
I agree with your sentiment, but I also think you underestimate its value and potential.
I don't think any of the issues you outlined cannot be solved are nor self made.