Bleachbit on ubuntu 18.04 delete rotated logs-what does this do?

would using this delete rotated logs command on bleachbit delete files needed for ubuntu to boot up/function or other files relating to internet browsers or files needed for open vpn to work?

The logs are not needed to boot Ubuntu. They are logs. The data needed to boot Ubuntu is in /boot

Is disk space low on your system? The logs are usually very small.

ok so the logs themselves are not needed to boot up ubuntu, but what i want to know is if the bleachbit command 'rotated logs' deletes any other files that are not system logs, say for example internet browsers files or files needed to use openvpn? thats what i wish to find out

Overwrites specific files found by its cleaners to hide the contents of these files (such as Firefox Internet cache).
Overwrites specific files found anywhere on the hard drive (such as a confidential spreadsheet on your desktop).
Wipes free disk space to hide the contents of files previously deleted by any software.
Wipes memory and swap to wipe data stored in RAM such as passwords and web pages (currently, only on Linux).
Bleach Bit is for Secure deleting of information using multiple passes to accomplish shredded data.
Be careful what you delete and shred. It will not be recoverable again. As noted above don't delete the /boot file.
Bleach Bit can delete file any on the hard drive.

To be save with Bleach Bit only do the basic clean operations.

What is the output of:

df -h

Thanks