Been seeing that tattoo post around and I'm guessing most of y'all are too white to chime in, so:
Filipino here. I'm not of the cultures that practice tattoos (it was lost to a large part of the country), I'm Tagalog. Closest I could ask about the tattoos was a Cordilleran, which is at least in the same region.
Symbolic tattoos have to look exactly the same to matter. In the example given (the triangles and lines, going around the collar), the tattoos look similar. But not the same, not really. Maybe combining the patterns is part of the culture and that's what they're seeing, but it wasn't clear from the example.
Judkins didn't mention if their artist was indegenous. But Filipinos aren't the only indigenous peoples who used tattoos with geometric patterns (imo the patterns aren't what's too similar, it's the placement on the body). Could be the artist was Filipino, another ethnicity, or white and geometric patterns are just coincidental. Maybe they should've asked before getting worked up.