Yup, at least that seems to be the case usually. Standard templates only need to be checked for the plain text in the title, on the image itself and maybe in the tags. Even if you're just combining two standard templates together it doesn't get recognized as such and needs to be reviewed personally. And that takes hours. At least that's my understanding of how it works. So if you want to make sure at least someone sees your meme use custom templates or combine a few. XD