I didn't even realize this was a religious war being fought, but honestly who cares? This is not a coding sin, it's a matter of WP trying to protect their trademarked word. There's far bigger and more important issues in the WP community that running about correcting people from lowercasing trademarks.

I do however, think it's reasonable that if you are selling products, that it is a commercial site, you do have some sort of responsibility to WordPress to respect their wishes in regards to their trademark. Personal communications though, blogs and the like? Non-issue.

I've seen plenty of devs who can capitalize WordPress correctly but still can't even follow the most basic security guidelines, so being a grammar Nazi is no assurance of quality.