To be fair, centrists are really really annoying and more often than not just mean you have reactionary politics that are just a bit less extreme than the right perhaps. You will rarely, if ever, see the right criticize centrists, because they are useful to help them portray themselves as reasonable when championing unreasonable causes. Plenty of obvious conservatives/cryptofascists will claim to be centrists, apolitical, "classical liberals", etc.
And most centrists just lack awareness of the likes of who they're choosing to identify with. One could choose to either say they're liberal or conservative, the moderate sides of either wing, and it would sound a lot more respectable than being a self described centrist.