As time goes on, much functionality of memo will be off-chain, with just the raw content of the messages embedded in the blockchain. At that point, wouldn't it just be reddit without privacy?
Reddit has a huge problem with vote manipulation, censorship and you can't earn anything for posting quality content. Reddit probably know it's you posting.
There is tippr and chaintip. Manipulation / censorship probably coming to memo also (once popular, karma must be used). Reddit knowing you vs the whole world knowing - which is better?
If you start using chaintip or tippr to normal people they will probably close your account. If you have real name on Twitter whole world knows too. Most don't care.