This issue is not resolved. It's been a number of days where Minecraft posted patch notes stating fixes for Switch, and the update isn't even available. Marking a ticket like this as resolved and saying the update isn't available for Switch yet is a joke. You have fans that pay for realms and can't access them. Put your money where your mouth is M$ojang.
Confirming that this hotfix has resolved the issue on Nintendo Switch. I'm now able to connect to the marketplace.