I suspect that the batteries store more than just RTC -- that could also be PRAM vars and such. that can break certain systems.
But anyways, do what you prefer, but the batteries don't leak unless you neglect them. change them ever 7 years, no problems.
I'm the system admin of this site. Private security technician, licensed locksmith, hack of a c developer and vintage computer enthusiast.
https://contrib.irixnet.org/raion/ -- contributions and pieces that I'm working on currently.
https://codeberg.org/SolusRaion -- Code repos I control
Technical problems should be sent my way.