Sudo also allows you to control which commands can be elevated to admin.
It also lets you elevate to admin without knowing the admin password, you elevate with your normal account password. Effectively, some commands can execute as admin, but the user generally cannot.
So you can allow limited administration without giving everything away.
Good thing they're keeping the admin terminal too so you can just keep using that.
Personally I think it's way more likely the admin command is the one off like installing something, changing a setting and then everything else before and between it are user commands that don't need to be in admin space most of the time.
It also lets you elevate to admin without knowing the admin password, you elevate with your normal account password. Effectively, some commands can execute as admin, but the user generally cannot.
So you can allow limited administration without giving everything away.