(Maybe it’s not ok by then because they’re not talking about a tzadik gamur of Tanya, someone that is 100% batul to Hashem and doesn’t even feel like doing anything else than what Hashem wants? In which case there would be no contradiction.)…
Many chassidim, not just Chabad will address requests to the Rebbe as well.
I don’t believe “addressing a request” to a ????? is done by any other chassidim. When ??? ???? gave glory to the sun and moon, it was ultimately directed towards Hashem, but still a”z.
First Rambam in Hilchos A”Z:
???? ???? ??? ??? ???? ???? ???? ?????? ??? ???? ???? ???? ????? ???? ?? ?????? ???. ??? ???? ?????. ???? ????? ??????? ??? ?????? ??? ??????? ?????? ?? ????? ????? ????? ???? ??? ???? ??? ????? ??????? ????? ?????? ?? ????? ?????? ?????? ??? ????. ???? ???? ??? ???? ??? ???? ????? ?? ????? ?????. ??? ????? ???? ???? ??????? ????? ???? ????? ?? ???. ???? ???? ??? ?? ?? ??? ?????? ????? ??????? ?????? ??????? ??? ?????? ?????? ?????? ?????? ????????? ????? ??? ????? ???? ????? ????? ????. ??? ??? ???? ????? ??????. ??? ??? ?????? ?????? ??????? ?????. ?? ??? ?????? ???? ?? ???? ??? ???? ??. ??? ??????? ???? ?? ?? ????? ??? ????? ?? ?? ???? ?? ??? ???? ????? ???? ?????? ???? ???? ????? ????? ?????? ???? ????? ?? ???. ????? ??? ?????? ???? ??? ???? ??? ????? ???????? ?????? ??? ???? ????? ???