> Although this feature from ALBs is relatively new but the arguments for sticky gRPC connections and NLB are also applicable with ALBs. If yu end up with a single sticky and persistent connection from a client that starts sending a large volume of requests, you are overloading a single server instance that holds that connection and the requests are not being load balanced as they should.

That seems strange to me. Without end-to-end http/2, ALBs would load balance individual requests, not the entire TCP session, even with keepalives. And it sounds like individual messages on the same connection can be routed to different target groups, which would make it even more stange not to balance individual requests.