Not to ignore the point being illustrated, nor the tongue-in-cheek nature of it, but a symbol on the flag of Nazi Germany and a Latin phrase from the middle ages that some undesirables on the internet use don't really seem comparable in scale, and scale is the important thing here.
MAGA, for instance, was memetic, so if you use/repurpose it, there's a relatively unambiguous origin. Deus Vult in this context, not so much; it lacks the spread and saturation necessary. If the Swastika was only present on a small subset of Nazi paraphernalia, it wouldn't be nearly as taboo - it's till so toxic today because it was on everything and so readily associated.
So I don't really think that argument applies here.
I get your point - if the swastika is used in a western country, its almost certainly a Neo-Nazi using it, not a middle-aged Indian woman, even though millions of Indians use the swastika in a religious context every day. However, by the same token, if someone says Deus Vult, its statistically far more likely to be a Neo-Nazi/far right nut rather than a fan of Crusader Kings.
I really don't like just letting scumbags claim every cultural item and symbol they want. The swastika is clearly lost to us, give the breadth and enormity of its use, but if we let them poison everything they ever touch we'll end up poorer for it.
MAGA, for instance, was memetic, so if you use/repurpose it, there's a relatively unambiguous origin. Deus Vult in this context, not so much; it lacks the spread and saturation necessary. If the Swastika was only present on a small subset of Nazi paraphernalia, it wouldn't be nearly as taboo - it's till so toxic today because it was on everything and so readily associated.
So I don't really think that argument applies here.