the swastika was used in a very positive way for millennia
It still is. Eastern societies didn't dump an ancient symbol of good luck just because of the nazis.
https://kashgar.com.au/blogs/ritual-objects/the-swastika
Though they're not exactly the same; the nazi version is diagonal, with the corners on the points of the compass, while the eastern version sits flat.
https://study.com/cimages/videopreview/o10s9j8gpl.jpg
All too often we let the assholes ruin good things.