Hello there. Most price increase in crypto is due to speculation. Speculation is another word for investors' calculations, estimations and expectations.
So 'speculation' is not a bad word --- it just means what investors anticipate for the future. I think in this case, the speculation is good...
If you think about it, Decred solves Bitcoin's main problem through its implementation of hard fork voting.
The price increase from $30 to $40 is nothing I think, compared to what's coming for DCR
I haven't really followed decred so well but what else are they intending to implement that would boost the price further?
The problem with speculation is its usually based on peoples expectation for the future and that leads to volatility whenever projects under or over deliver. I've always been on the fence with decred because I feel people are pricing in more than they can really give.