@ SH
“I’m not sure what practice you’re referring to, I possibly missed a few posts, but I can tell that connecting to a Tzadik is a way of connecting to Hashem. As Rashi says:
ולדבקה בו. אֶפְשָׁר לוֹמָר כֵּן? וַהֲלֹא אֵשׁ אוֹכְלָה הוּא? אֶלָּא הִדָּבֵק בְּתַלְמִידִים וּבַחֲכָמִים וּמַעֲלֶה אֲנִי עָלֶיךָ כְּאִלּוּ נִדְבַּקְתָּ בּוֹ”
This is a perfect example actually. The word “davek” means to cling / attach to. So for example some things that are included would be
-Becoming a talmid of a Talmud Chacham and serving him
-Supporting the learning of a Talmud Chacham
-Marrying off your daughter to a Talmud Chacham
-Doing business with a Talmud Chacham
-Partaking of a sudeh with a Talmud Chacham
The above are all ways Chazal tell us to be m’kayem being “davuk” to a Talmud Chacham. No one is questioning those practices.