Jailbreaking is still around, benefits are endless, tweaked apps eg. Twitter I could download videos enable hidden features, stop url tracking and more, WhatsApp more privacy features etc, YouTube background play ability to download, being able to throttle the device saving battery life, theming etc I could go on and on lol, yes Cydia’s support was dropped by the original Dev “Saurik” but modified versions work, and other options came such as Zebra and Sileo, the community is small but it’s still around.