i disagree for multiple reasons.
first is the fact that bitcoin doesn't really get a bad name when someone rips off idiots because bitcoin is just the tool they used and they might have as well used anything else.
besides pyramid schemes are not really that big nor that common. they rarely happen, specially on big scale and they happen in countries like this one here. so it is again not a big deal.
not to mention that $33 million is the biggest thing you can find and in comparison to other scams it is not even that big! we already have others such as ICOs that are scamming people hundreds of times bigger than $33 million per day and if anything they are giving bitcoin and cryptocurrency in general a bad name.