I feel like downward trend in jailbreaking is temporary. iOS 10 has proven to be the most secure version of iOS. iOS 11 adds some additional complexity with the new file system and the possibility of sharing files between apps. I can only imagine there are new vulnerabilities to go along with that. In addition, the new, faster hardware provides opportunities for mods that were previously not possible.
My hope is that the severe lack of jailbreaks this year lulls Apple into a sense of complacency opens up new opportunities for jailbreaking iOS 11.
My hope is that the severe lack of jailbreaks this year lulls Apple into a sense of complacency opens up new opportunities for jailbreaking iOS 11.