You could indeed!
I think some people partake in tattooing for reasons that are beyond explanation or rationalization. As for this self constructed spirituality you mention, I am not sure I understand.
I think the sak yant style of tattoo most closely associated with Buddhism or spirituality is influenced in part by those things but is also somewhat a novelty. The “unalome” is probably more likely to be tattooed on a NYC hipster than a Thai monk.
I do believe that tattoos representing the Buddha himself are considered somewhat in poor taste in that region of the world as well.