You probably wouldn't be considering that if the chart was showing the actual network hashrate. For if it did, we would be seeing significant spikes instead of the difficutly adjustment's gradual ones.

I recommend that everyone check the block timestamps. If it is what I suspect, the flashmining is random and/or ongoing. eg. The whales and/or pool(s) always return when the difficulty bottoms out, then leave once it peaks again.

Whatever you do, please do your research. Do not let the insider shills control what you learn and know about any coin.