It doesn’t because a lot of low wattage silicon doesn’t support HT/SMT anyway.
The difference is that now low wattage doesn’t have to mean low performance, and getting back that performance is better suited to E cores than introducing HT.
Saying "no" doesn't magically remove your contradiction. E cores didn't exist in laptop/PC/server CPUs before 2022 and using HT was a decent way to increase capacity to handle many (e.g. IO) threads without expensive context switches. I'm not saying E cores are a bad solution, but somehow you're trying to erase historical context of HT (or more likely just sloppy writing which you don't want to admit).
No, you haven't explained the contradiction, you just talk over it. Before E cores were a thing, HT was a decent approach to cheaply support more low utilization threads.
The difference is that now low wattage doesn’t have to mean low performance, and getting back that performance is better suited to E cores than introducing HT.