Basic Doctrine Structure

Anyone else think that basic doctrine structure is quite miscellaneous and not constitutional because it is not written in the constitution and what iff some day the court derived something similar doctrine structure and put a limit on parliament maybe something on freedom of speech as basic doctrine and it can promtoe hate speech or anything who knows?. Does anyone else think it could be a conflict in future and world will read us as an example when this situation may occur? or Am I just overthinking? open for your thoughts and guidance guys … ignore grammer errors pls if any….