Is the above statement true or another fud from cryptcurrencies haters aka banks and government institutions?

The question hinges upon an ambiguity in the term "volatility." It's a statistical concept: gains are counted as "volatility" just as much as losses.

The rationale for this approach is that huge gains tend to be accompanied by huge losses, so a big gainer should be marked as "volatile" as well as a huge loser.

The flaw in the concept is well known. That's why the Wall Street quants focus on "alpha:" the gain net of volatility.

I don't have the figures, but Bitcoin is clearly high-beta and high-alpha!