I’ll just mention Foomuuri here. Its bit of a spiritual successor to shorewall and has firewalld emulation to work with tools compatible with firewalld
Foomuuri is ALMOST there.
I mean there are some payload over payload like GRE VPE/VXLAN/VLAN or IPSec that needs to be written in raw nft if using Foomuuni but it works!.
But I love the Shorewall approach and your configuration gracefully encapsulated Shorewall mechanic.
Disclaimer: I maintain vim-syntax-nftables syntax highlighter repo at Github.
And possible failure to adjust altimeter after a storm pressure front has passed, before takeoff.
I think the older veteran copilot is not forceful enough when he noticed as being too high.
Doesn't help that ATC was dismissive as well either due to ignorance or misunderstanding.
Regretfully, a veritable comedy of errors. Better to settle ouy of court than set a precedent.