I disagree. This is not an “argument from tradition.” Circumcision is a tenet and a covenant, not just a tradition, of Judaism. I would agree that the argument that “infants have been circumcised in America for the past century, so we should continue to do so” is an argument from tradition, but it is not the same case as upholding Jewish religious tenets.
Similarly, one could say that bodily autonomy as a value is also not absolute - after all, we have laws requiring people to wear seatbelts, wear clothes in public, and wearing masks, all of which violate bodily autonomy. Of course, these are not the same degree as circumcision, but nonetheless demonstrate that bodily autonomy also has its limits, as does upholding “traditions”. Should parents not be allowed to get their children’s ears pierced? Or consent to medical procedures if the child does not agree? You could even argue that upholding bodily autonomy means that abortion should be banned.
I will note that all the examples you mention are most certainly reversible. You can undo your seatbelt, take off your mask and clothes, etc. Circumcision is not a reversible procedure.
For the Judaism aspect, you can convert to the religion (it is not the easiest religion to convert to, but Jewish converts do exist I believe?); and similarly, leave the religion by just not attending your synagogue, following traditions and religious mandates and what not. Judaism is "reversible" while circumcision is not.
So, as a religion, banning circumcision just means that children cannot be religiously Jewish at the absolute worst. And even then, it is not like circumcision is the only mandate that Jews have, I am pretty sure those uncircumcidiced children would be able to study their religious texts, keep Jewish traditions, etc. Judaism would not be banned, and any kid who wanted would still be able to "convert" (using the term extremely loosely here as they'd already be doing everything else a religiously Jewish person does) to the religion if they so chose.
As for the argument of the Jewish pseudo-ethnicity (I am never sure to what extent it is one compared to a religion so sorry if the term is offensive or something), I see no reason to give Jews a pass here any more than Arabs or any other ethnicities that also routinely practice circumcision tbh.
I admit it is not a great outcome, but I view this as the lesser of two evils. It is better to delay any irreversible decisions done for non-medical reasons until the children in question are old enough to consent. The age of consent here would probably not even be 18 years old, but more like 13 or something like that.
Quite simply, forcing a circumcision on a child for religious reasons infringes much more on the autonomy of said child than taking the procedure and having some religious issues in my opinion.