You don’t understand what centrism is. There is no such thing as a single “centrist position”.
Centrism defines a collective of views; it describes a set of points of view that lie on both ‘wings’, such that it’s not really accurate to label that person as either.
Defining centrism the way you just did is kind of like defining bisexuality as being attracted only to a person who is a 50/50 mixture of male/female (which of course doesn’t actually exist), instead of someone who is capable of being attracted to males and females. And just how most bi people have a preference ‘lean’ toward one sex over the other, centrists also tend to ‘lean’, based on where the lion’s share of their values sit.
Basically, anyone who describes themselves as “left/right leaning” is a centrist, specifically who has volunteered a bit more specificity about their set of values.
Uh yeah, that was an analogy specifically referring to another situation where someone has a completely wrong idea about a topic (morality) and feels smug and self-assured when their ‘target’ doesn’t fit within their framework. I wasn’t agreeing with my hypothetical fundamentalist–you’d think me calling them a “fundamentalist” would make that kind of obvious, lol.
Another simple example would be people thinking global warming isn’t a thing because it’s cold somewhere.