CC editors must have to err on the side of caution. They never know how a buyer is going to react to a word, or think the word is too risqué for their target audience.
The thing that is most annoying to me is the seemingly ever expanding ban on anything approaching first person. I get that first person essays are banned and have been as long as I've been here (though there are still plenty of personal essays, poetry and fiction lurking in the catalog from the earlier days). But I have older articles in my own catalog that include first person in the title (Usually in the form of a question, as in "Should I Do X" or "Can I Do Y", where "I" is obviously implied to be "you" the reader, not "me" the writer). And previously first person plural was acceptable, as in "We all wish we had more spare time,but I recently got a rejection for that, and had to rewrite to get it in, which is a newer development even after the "no more 'I' in titles" started.
This frustrates me because 1) the "we" format is very accepted in blog and service article writing (read any women's magazine or advice article) as a way of setting a warm and inviting tone that is desirable in drawing the reader in and 2) I don't do a lot of formal SEO optimization or emphasis on keywords, but titles and subheadings that include exact phrases that people are likely to search on is a no-brainer, and many, MANY people (including me) type in Google queries like "Can I Lose Weight by Fasting" or "Should I List Volunteer Work on my Resume?". Allowing titles like that not only makes the articles appealing to potential buyers because they know it makes it more searchable, but it makes it easier for buyers themselves to find the article listing via Google -- hence getting more new buyers who may not have known about the site before.
And I'm not even if the changes come from revision of hard and fast rules from the top, or individual editors' interpretations, which makes it even more frustrating, because CC may not even realize that they are missing out on potential sales due to overzealous enforcement.
I think it's an individual editor thing. I've had the "we could all use..." and "let's take a look at..." kind of rejections, but one article was written in Q&A format with the Qs in first person, and it sailed through (and sold quickly as it happens). I paused for thought before submitting, but it was the only way the article made sense, and that editor seemed to agree.