Not anonymous (mainstream creeptocurrencies are traceable by design!) but censorship resistant. Yes, this is the ONLY use case for the buttcoins.
The problem is that for every successful weed and nudes sale there's a million ransomware attacks, scam calls, and absolutely fraudulent "investments".
completely false, privacy coins command billions of dollars in market cap, Monero alone is currently worth 2.2 billion and will likely continue to grow.