My understanding is that you get to take your followers and friends with you - since the user ID is common across platforms. It does seem suited to generic social media platforms though, that's true.
Haven't heard of lens, will check it out! I was wary of basing Nool on a platform or technology that wasn't mature and tested. We are considering using the blockchain down the line if and when we have a gift economy running. The purpose isn't to mint our own tokens or anything, but rather to make transactions transparent.
Have you heard of arweave btw?