There are both technical and design reasons for the change.
Technically, it lets us rip out a lot of logic that handled the differences involved in loading and displaying your own profile vs someone else's; from a design perspective, this makes your profile page a much more logical grouping: "content you created" instead of "content you created and also content you saved." Feeds is already the root category for "content other users created," with each item (All/Local/Subscribed/Community) displaying a filtered subset of that content, a grouping into which Saved fits much more naturally.
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