The basic idea with tags sounds very similar to Reddit. Especially with the initial focus on links. Reddit has degenerated into something a bit different, however. Why would your app stay true to the original concept in the face of scaling and financial pressure?
For one, the revenue model for lynkmi is user subscriptions rather than ads. I'm taking a hard stance on never doing ads as that distorts the incentives. I want the money to come from people who like the product.
Also tags are more personal like "tmoravec/cryptozoology" rather than a global "cryptozoology", so intentionally focused on keeping social circles smaller.