I've followed SBD for quite some time now, and it experiences P&D just like the rest of crypto (with the exception of USDT and BitUSD, both of which are basically P&D immune). What's the explanation? The only explanation I have - and this is not based solely on the fact that it too pumps beyond belief, but also on what I see and hear traders talking about and doing - is that the vast majority of crypto traders don't have the slightest clue as to what SBD is! They think it's just another shitcoin that periodically moons! It's incredible the general ignorance on the part of the majority of the so called crypto trading experts. And it doesn't stop there. Most don't even have the faintest idea about what risk management is - just look at how often you see them talking about "HODL" and "their bags". They're just extremely lucky that they're involved in an unprecedented bull market and that they get bailed out by periodic bull runs, otherwise they'd already have gone broke. To summarize, the answer to your mystery is: complete idiocy!