Redshift serverless as destination for KInesis delivery stream

some time ago, I was told that for using Kinesis delivery stream to Redshift, you HAD to use a provisioned cluster, not serverless. Something to do with Kinesis only able to use public IP addresses on both sides, and Redshift serverless was internal-only.

Has this been fixed yet? I see I can now create a "Redshift endpoint" for Redshift serverless... AND checked the "Enable public access" checkbox. but when I try to define it as the destination for Kinesis delivery stream (in the GUI), my redshift serverless instance still doesnt show up as an option.