I should've been more clear that my issue was as much (or more, probably) with my own psychological issues than with his drumming.
Someone asked whether anyone in my family has a history of OCD, and while I think that comment was made tongue-in-cheek, I have always had obsessive/compulsive tendencies, whether it was a concern at a young age that people didn't put my toys back exactly where they got them/how they found them, freaking out as a baby/toddler whenever I had anything dirty or sticky on my hands (my daughter actually had the same issue), having anxiety when classmates would have sloppy handwriting (anxiety I've relived through our teenage son's life... it's so hard to handle), never wanting to do "group projects" in school because the rest of the group did things differently, etc. I'm sure this whole music issue right now stems heavily from those tendencies.
As stated previously, the biggest problem here is my mindset, not our drummer, which is why I originally sought advice on how to minimize my anxiety.
Jacob