::No, if you'd read the WP:MOS, it explicitly allows both styles as long as articles are internally consistent. What is not allowed is to change an article which consistently uses one style to another style, which is what you (and ) have been doing. The community has rejected not only using BCE/CE as a standard but also BC/AD, instead preferring to allow both systems.   

 :::The majority vote was to reject the BCE/CE as a standard. Apparently, it is still not settled: Wikipedia:Manual_of_Style_%28dates_and_numbers%29#Eras. It is interesting to note that YOU have appointed yourself the arbiter of which one to use for consistency. Note that I am entitled to do the same and revert you. I do suggest that you consider only BC/AD for consistency as well, but I have not seen you opting for that version in a single article.