You are right. However, there were completely diverse and contradictory and competing belief systems within Nazism - it ran the gamut from Christianity to Occultists to Neo Paganism to mystics, to scientists, anthropologists, archaeologists, linguists etc. What we do know for certain though is that Aryanism and the swastika were and still are not signs of peace in Europe. It will indeed sound very jarring to Hindu ears but at the end of the day a swastika is a symbol of hate in western europe when used by a western europeans . And all of those connotations are not going away any time soon - maybe tomorrow but not today. Charles Manson wasn't carving swastikas into his forehead because he was a peace loving guy.
Obviously the display of things like swastika after the war was legislated against in some places, in others monitored but as time went on, fringe groups would circumvent censure by claiming things like oh no... we are an innocent neo-pagan group and these symbols are only the symbols of our gods (which to be fair they are) and it is just an unfortunate coincidence that they were also used in National Socialism. Just a coincidence....
Personally I could only ever see any complaints about the use of Thor in comics coming from within those circles. And they wouldnt be complaining because it offends their religious sensibilities....