Sure, it's easy to fall into a trap where accepting new information is hard, and I think most adults are aware that as we age it's important to try and keep an open mind. However, our society currently has an even bigger problem with people who do the opposite. People were taught to "keep an open mind", but haven't been taught what a good source is.
Like everything, you have to find a balance wherein you can accept new information but are choosy about the sources of that info. Otherwise bad data and hidden agendas will have you avoiding basic healthcare because vaccines give you autistic 5g and drinking bleach to kill the imaginary parasites makes more sense than smearing a little cortisone cream on.
A great man once said: "We do our peers, countrymen, students, and children a grave disservice by admonishing them to think for themselves without also giving them the critical thinking tools to do so, for in so doing we foster a culture where "independent thought" is equated with "contrarian thought". This gives rise to an anti-intellectual, anti-science paradigm that supports an idea not because it meets a basic standard of evidence, but rather simply because it opposes established thought. This is worse than the intellectual calcification that stagnant "herd thinking" would give rise to, because it doesn't simply halt progress — it puts it in full retreat."