The kernel hooks (such as initramfs creation and flash-kernel) are only triggered in this case.
As per section 6.5 of Debian policy this is invoked with the old postinst:
"old-postinst" abort-upgrade *new-version*so not having it in 5.16.0-1-pureos2 is not a problem but it will be a good idea for future upgrades.
Signed-off-by: Guido Günther guido.gunther@puri.sm