It has been asked how to customize the backup schedule of Time Machine, but the solutions in the answers only seem to work in releases of OS X that weren’t “rootless”, i.e. before 10.11 El Capitan (or was it 10.10 already?). The recommended tool Time Machine Scheduler also doesn’t seem to have been updated since 2013.
Is there a solution to adjust the backup intervals for current (2015+) versions of OS X?