Just ignore it and Force the factory.bin installation and do not keep settings.
I have EA6350 v3 on 22.03.5. I just changed the kernsize and rebooted. New kernsize shown. I see this message when I upload 23.05.2
sysupgrade does NOT check kernsize. DSA is new to all IPQ40xx devices starting 23.05 too.
If there were problems with the wiki instructions, it would have been flagged up long ago as the EA8300 instructions for installing 23.05 has not changed since August 2023.