You don't want to be the one pumping ponzi schemes. 

Bitcoin doesn't create any value, it is only a wealth transfer. Bitcoin winners take money from bitcoin losers.

The people that will get in trouble or sued in the future by people that lose money in bitcoin are the people that fraudulently induced the buying. 

You can't say invest in bitcoin.

You can't say bitcoin is a long term store of value.

When is being wrong not illegal? When is being wrong fraud- when it is obvious? Not sure.

If you are in the investment business and run a fund you know the definition of an 'investment' or at least a legit investment.  Probably fraud to then call bitcoin an investment.

Vs. making price predictions- that is a forward statement that know one can factually know. Not usually illegal.