Social platforms have a long history of copying each other, and lately it feels like every app is racing to become identical to its competitors. Of course, major platforms adopted short form feeds as their primary content after TikTok’s explosion, but it hasn’t stopped there. Instagram rolled out in-app maps this year that looks suspiciously similar to Snapchat’s Snap Map for location sharing with friends. YouTube introduced Reddit-style threaded comments, while TikTok announced its new “bulletin board” feature last month that lets creators share content through Instagram-like channels. Even newer entrants like RedNote and Bluesky are essentially built on “copy...