I agree with all of your post but you can search the entire server at once. If it autofills the channel you’re either on mobile or used ctrl+F, and you can just remove it as a parameter.
Works the other way around as well, like you can search in a specific channel by adding “in:#channelname” in your search box.
Still hate it though. But I wanted to point out that it’s a teeny bit less stupid.
Is your mother a hermit crab?