terminal – How-To erase a backup securely with “tmutil”? “tmutil erase” does not erase the backup, since too quick an okay message comes!

When I make a brand-new backup, I wish to erase the old one. Prior to Ventura this dealt with tmutil erase
Now tmutil erase just appears to mark the backup as “erased”. However it does refrain from doing an erase.

How can i truly and securely erase old backups?

 tmutil listbackups
/ Volumes/. timemachine/BFBDDE68 -1 F36-4F51-A9C7-B1773D7DD151/ 2023-03-03-075000. backup/2023 -03 -03 -075000. backup.
/ Volumes/. timemachine/BFBDDE68 -1 F36-4F51-A9C7-B1773D7DD151/ 2023-03-16-053945. backup/2023 -03 -16 -053945. backup.

sudo time tmutil erase -d/ Volumes/gg05 -t 2023-03-03-075000.
1 backups erased.
0.34 genuine 0.00 user 0.00 sys.

tmutil listbackups.
/ Volumes/. timemachine/BFBDDE68 -1 F36-4F51-A9C7-B1773D7DD151/ 2023-03-16-053945. backup/2023 -03 -16 -053945. backup.

diskutil list.
(.).
/ dev/disk5 (manufactured):.
#: TYPE NAME SIZE IDENTIFIER.
0: APFS Container Plan - +5.0 TB disk5.
Physical Shop disk4s2.
1: APFS Volume gg05 950.7 GB disk5s2.

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