Not that
BTC needs any reason to dip but this is as good as any.
Mimblewimbles privacy is fundamentally flawed. Using only $60/week of AWS spend, I was able to uncover the exact addresses of senders and recipients for 96% Grin transactions in real time.
The problem is inherent to Mimblewimble, and I dont believe theres a way to fix it. This means Mimblewimble should no longer be considered a viable alternative to Zcash or Monero when it comes to privacy.
https://medium.com/dragonfly-research/breaking-mimblewimble-privacy-model-84bcd67bfe52TL no link clicky, Mimblewimble is supposedly dead

Good thing that Mimblewimble and BTC are not the same thing. In other words, fuck that shit coin.