'Bridge' was and still is an established network term for joining two broadcast domains into one. Why the hell you decided to name your NAT'ed network layer a 'bridge'?
It's even more egregious with 'ipvlan' and 'macvlan' drivers:
> ipvlan Connect containers to external VLANs.
Duh, that's a 'routed network' and nobody cares if it's on a separate vlan or not.
> macvlan Containers appear as devices on the host's network.
And this is a bridge!