Health, I didn’t say that pritzus couldn’t be an issur of chukas. I said that chukas hagoyim does not necessarily involve pritzus. Putting up a “Channukah bush” is assur als chukas hagoyim (not avodas zorah) but I fail to see any shemetz of pritzus in it.
Personally, I think nose rings are disgusting (ever see what happens when the wearer has a cold?) but to asser them based on personal oppinion is not a valid option. The standards of Jewish female adornment has always followed the general practice. For instance, hair coivering for married women was based on the societal standard in the zman hagemorah. Women cover their hair today because the Chachamim were gozer based on the above, notwithstanding that the custom is not followed today in the general population (vide Aruch haShulchan). No such gezeirah was issued on adornments so they continue to follow the general custom such as earings, necklaces, rings, brooches, etc. If nose rings are worn by the general population of women, they are muttar, disgusting, but muttar. Please also note that the general requirements of tznius still apply.