Bitcoin was never meant to become an investment, it was created to become a global currency, and it is being developed and introduce, so for now the feature and condition still not yet 100% suitable as currency, as for the price, bitcoin price is doing great in this 10 years, the rising is very significant, some of the people still can't accept the bitcoin existence, they still prefer the old traditional investment, so can't blame them to look down on bitcoin
This is really well said and exactly right. Bitcoin and cryptocurrency simply goes against many peoples political and social views of what money is supposed to be. It's not that they don't think this is a solid technology or that it doesn't work well...it simply goes against the grain of the norm and they don't like it.
When it comes to Buffett and Dimon, bashing bitcoin is in their best interest, financailly thiat is...so it's no suprise they continue to do so.