That isn’t at all what ‘conservative’ means. And ‘entrenchment’ is not synonymous with tradition. Tradition is a recognition of lessons we learned over a long stretch of time. It is more closely related to ‘if it ain’t broke don’t fix it’ than ‘entrenched’. We are certainly floating among fine distinctions here, but they are important. I think you would find it incredibly difficult to defend all “organizations” that"refuse to change practice in light of evidence". Like, say, Union organizations. Talk about lashing out!!
The problem with using words like “individual liberties”, “improvement of efficiency”, or “fairest and most equitable” is that they are either WILDLY subjective, trojan horses for the most evil political ideologies (anything neo-marxist comes to mind) out there, or the definitions change on the whim of whatever group has the most power today.
But you are right; people can be more than one thing. And luckily for us, we have a few hundred years of Western growth and evolution that have codified a small number of useful traditions that have promoted the development of the most powerful and enlightened nation the planet has ever seen. We continue to grow and learn, hopefully abandoning bad ideas like sexual libertinism and anything related to marxism, and learned from the hard lessons of our past.
Being a Conservative does not mean a refusal to even allow change. It means respect for the hard lessons already learned and an insistence that we have a damn good reason to change those valuable existing traditions. I wish labor unions would learn from their many mistakes over the past hundred-plus years they have been around.