Why would this be?

Because the Downvote Army hasn't gotten around to downvoting more of your memes into submission yet.

95% is a pretty good feature rate!

because they are too SPECIAL and they are for YOU ONLY. ENJOY++ making and not submitting them, whoever needs to see it, SHALL.

Keep in mind too, that if you ever have a meme featured, then delete it for some reason, it still counts as a submission but counts against your featured average. I've deleted a few because I've noticed typos later etc, and was disappointed when it lowered by featured percentage.

Posting in a foreign language, nudity, offending a person or group, threatening someone, visible logo on meme. Any number of things.

Whoops! I did make a meme in Spanish and it didn't get featured! I guess that is true! Also some memes did have another watermark.

Don't feel bad. It happens to everyone. One I did on Thanksgiving. https://i.imgflip.com/1epk07.jpg. Notice the watermark at the bottom. A lot of foreign language memes slip through, but they're usually flagged for TOS violation.