For reference see:
https://issues.redhat.com/browse/OSDOCS-13694 Remove CRD documentation for OSSM 3.0.0

https://docs.redhat.com/en/documentation/red_hat_openshift_service_mesh/3.0/html-single/installing/index#ossm-accessing-bookinfo-application-using-gateway-api

https://issues.redhat.com/browse/OSDOCS-13506 Detect conflicting OSSM subscriptions for Gateway API
In regard to upgrades, we need to inform OpenShift Service Mesh users that if their current subscription is in conflict, they wont be able to use Gateway API for Ingress until that is (manually) resolved.