The “breakthroughs” (different ones) have been announced steadily for over a decade, and still no practical fusion energy near to marketability.
It’s become like the “breaking” “news” reports that are so often just fizzles.
The “breakthrough” press releases tend to come out around the time applications for research grant renewal are sent in.
It seems that, for the last three or four decades, fusion energy has remained “twenty years away.”