Mulling over why this might be and came across this interesting paper, worth a look if you have a long lockdown evening to fill! It uses the example of climate change deniers but applies equally to lots of current issues around trans ideology, Covid deniers etc.
Motivated ignorance, rationality, and democratic politics
Daniel Miller Synthese (2020)
link.springer.com/article/10.1007/s11229-020-02549-8
A few quotes from the paper:
Why do members of the public disagree—sharply and persistently—about facts on which expert scientists largely agree?
As with religious and ideological communities more generally, dissent from group dogmas and sacred propositions can issue in harmful forms of group ostracism, even when such heresies are best supported by the available evidence.
issues such as climate change motivate individuals to engage in identity protective cognition, conforming the way in which they seek out and process information to the goal of protecting their political-coalitional identity rather than arriving at the truth. Specifically, because the positions that people take on climate change and related issues have become badges of coalitional affiliation and loyalty, individuals are incentivised “to attend to information in a manner that promotes beliefs that signal their commitment to the position associated with their group"
although this phenomenon is individually (instrumentally) rational, it is socially catastrophic: if a large number of people in a democracy conform the way in which they seek out, ignore and process information to the goal of protecting their coalitional identity rather than achieving knowledge, the resultant ignorance will then likely play an important role in political decision-making.
how do unfounded beliefs about matters of empirical fact become signals of coalitional membership and loyalty to begin with?.....beliefs that perform such signalling functions are inherently biased towards implausibility, both because out-group members have no evidential reason to hold such beliefs and because the reputational damage associated with believing absurdities generates a costlier—and so more reliable—signal of coalitional loyalty
noted the work of feminist philosophers and critical philosophers of race who have drawn attention to the way in which members of elite and powerful demographic groups wilfully avoid—and, more generally, benefit from ignorance of—aspects of the lives of oppressed groups in society
Interested to hear what others think!