A phrase/expression/saying for coming in an already-stablished situation and so accept it for granted

Question

You become a member of a particular society/community, and there are certain norms/conventions/lifestyles in that community which you take for granted and don’t question. Sometimes they are unreasonable or even nonsensical. But you don’t question them, maybe because there were already there when you came to the community.

Example: when we started our university time, these rules were already there for a long time. So I guess we took them for granted. After some years, during the campus protests, some students started to question such rules, and then we were surprised how long we had simply accepted such ridiculous rules without questioning them.

Is there an expression/phrase/idiom in English to say that going into some contexts that already existed, and is not simply changeable, or objectionable?

"unquestioning acceptance of the status quo" or "unquestioningly accepting the status quo" or "naive acquiescence" — Prem, Dec 09 '22 at 08:51
@Prem I think the term ‘status quo’ can be developed into an answer. The term ‘naive acquiescence’ with a reference. I’ve seen just ‘silence acquiescence’. — Sasan, Dec 09 '22 at 18:29
I have Posted the Expanded Answer based on my Comment , @Sasan , I hope it is useful !! — Prem, Dec 10 '22 at 06:14
Does this answer your question? English idiom or proverb equivalent for "if everybody is doing it, I will also do it" ('follow the crowd/herd'; 'go with the flow'; 'not swim against the tide'; 'be sheep' .... — Edwin Ashworth, Dec 10 '22 at 19:22