I agree with some of this. When I look at Lancaster's OCC accomplishments over the last 20 years, some of them just don't strike me as bearing any significance given that (like you said) the flights change over so often. The hardest part, and this is what is so maddening in the scheme of it, is invariably over time a school is going to change divisions... which means the trophies that say "OCC-Ohio champions" from 10 years ago stop meaning a bucket of warm piss to kids when their school doesn't play in the OCC-Ohio division anymore. The only school this doesn't apply to as much is Gahanna since they've always been in the OCC-Ohio. But you have crap (not the best way to refer to it, but in the absence of a better word...) like Lancaster being in the Ohio the entire time of their OCC tenure -- only they are now in the "Buckeye", which wasn't even an original division name. That, and the weird business of Capital/Cardinal/Central designations changing over like control of Congress.
There are some rivalries that are probably genuine (e.g. Scioto/Kilbourne -- "The Battle of Hard Road"; Lancaster/Newark, which predates the schools' time in the OCC; Davidson/Coffman; Davidson/Grove City; W North/W South -- an old Northland Mall rivalry!)
The really hot take that will get me CANCELLED is Franklin Heights and Westland need to find a new home. A more ideal world has those two playing Centennial, Whetstone, Briggs and Whitehall. Columbus City League, as an institution, is still a mess and that's its own topic for a different day. Beyond those two things, it would be nice to see an "O.G." OCC where you have Coffman, Gahanna, Upper Arlington, Reynoldsburg, Thomas Worthington, Davidson, Grove City and Groveport be the eight schools that comprise the OCC banner... and the other 20+ schools can go make do with something of their whimsy.
The OCC has some advantages, especially when it comes to procuring refs/officials and the "brand" aspect, but the fact its so damn big does erode at some of the novelty, purity and tradition that we enjoy in high school sports.