that’s because we’ve understood there’s a line between what is reasonable for most users to implement - cron - and what is more reasonable for the OS to implement - systemd timers.
you don’t want a user who doesn’t know what they’re doing to accidentally brick a key OS timer (for instance, when they’re setting up their own), so systemd helps to segregate while still allowing experienced users to easily stop timers.
meanwhile, for users, cron is much easier to work with…
supposedly it’s a better format. in practice it’s worse, and support is so low in most applications that it’s bad. but google forces what it wants, so that means when it can give you a webp, it will to encourage adoption.
there are cases where alternative file formats can really be better: matroska, for example. webp is not better, however.