I think that nothing will happen with coins like Namecoin. It's not just an altcoin ... it's history. This is a kind of brand in the world of cryptocurrencies and sooner or later the price of this coin will recover!
Exactly, coins like Namecoin have a long history that has gone through time to test their useful existence, they are essential to the crypto market. Before it was ICO time, now defi but old coins are still solid and they will recover.