Super. Frustrating. It's totally ridiculous sometimes.
One of the most common that I've both seen/heard is that cryptocurrencies are bad because they often fund illegal ventures - such as sex trafficking, money laundering, and illicit drug sales. The articles go on to explain that you shouldn't invest in cryptocurrencies because you could be inadvertently supporting such delinquent behavior.
you probably shouldn't use these, you might do something bad with them
Let's go a step further. How much Fiat (US Dollars, Euro's, etc) are used for illegal activities? Who knows, but I think we can all agree that it's probably WAY more than the entire market cap of all cryptocurrencies.
So with that same line of deduction, you should probably also boycott your fiat currencies because they may be used for delinquent behavior.
In fact, with this line of thinking, I think you'll have to scratch all currency off your list. You're screwed. Go live off the grid I guess, because society is clearly not possible for you at this point. Good luck.
And that's the daily opinion.