Fusion power isn't commercially practical. We could make a working fusion plant right now. It would suck and provide almost no power, but we could make one. And the difference between the one we can make today that barely works and isn't useful and one that would be useful will be some number of additional incremental steps between where we are today and when that would work. Which is exactly the point. And your the attitude of, well we aren't using it today, so nothing has actually been done, is what I'm criticizing, so thanks for making the point even more obvious.

If I have seen further [than others], it is by standing on the shoulders of giants.

Once upon a time, that giant invented the wheel.