That is pretty erroneous given that...
....we have all of that available, and none of it really diminishes anything I posted.
You can make snide remarks and then try to compare players that play two different positions all you want.
Jon Koncak, Felton Spencer, etc (your average 90s center) were bad via eye test, context, and all possible stats.
PER isn't the end all-be-all, and never has been intended to, but for the intents and purposes of this discussion (which involves centers, not low-usage defensive wings), it's close enough.