Well I do care

1. About the people around me

2. When people start conflating these scams to mean Bitcoin is a scam

3. When people want to activate a soft fork (BIP 300 for example) to perpetuate these scams further

You're right in that caring about everyone is too much to handle, but the risk is further reaching than you portrayed, yes even if it were entirely client side, I would notice a changing culture.