There are some technically competent bishops out there, but my observations are that as in secular society, political savvy and technical competence do not usually happen together; higher office usually favors the politically astute and technically deficient.
The common assumption that many make is that all you need is to be a good “manager,” and that will lead to good decisions, such as choosing good advisers, and hiring the people with the necessary technical background, (be it typing, designing amplifiers or biomedical research) and even hiring people smarter than you. Sadly, this is not the common solution. People usually hire people who think like they do, and are therefore politically reliable. This is an excellent strategy to use to keep your job, but not necessarily one that gets the job done.
So, in general, I would say that bishops are more vulnerable to misdirection due to an incomplete understanding of complex technical issues. This can be exacerbated if they have idealistic leanings or are sympathetic towards people who are supplying the information. It is then possible to cross over the boundary from having ideals, to becoming an ideologue.
How do you sort this out? One way would be to listen carefully for the words “denier,” ”shill,” or the phrase “the debate is over.” No thoughtful and competent leader of men would say these things, at least not one I would wish to follow. The other way is to learn the material yourself, but most do not wish to do this because it is time consuming. They would rather pick someone who is saying something that they like to hear than to go to the bother of learning something new. Now we have come full circle.