Even if this data is totally accurate, who's to say that they wouldn't change their mind? I could almost guarantee a huge majority of people who bought into the bitcoin hype at near all-time highs were also planning on holding. But yet? Most of them panic sold.
panic selling because they do not believe that bitcoin can bounce back to higher prices and another reason is that they are using the money they still need. Long-term investment of course must require preparation of cold money and a strong mentality, so that it is in accordance with a long-term investment strategy.