I do not think it's too risky if you always pay attention to it. But, if you never pay attention to it, it might be risky, especially if you only invest in a short time. If there is a dump, maybe you will lose.
I don't think that there will be any person who will not pay attention to his investments as everyone wants to make profits from their investments and same goes with bitcoins too if a person is investing money in bitcoins then he will make sure that he takes right decision at a right time.
That does not have to look like that, someone may have a great investment and not look on it: just because he knows that the money in there are safe, and they are multiplying every day.
But being such a person is just something stupid: you cannot have any kind of a guarantee on the investing programme, or anything like that. Every single activity that is about getting returns from redistributing money contains some kind of risk, on a different level.
You may go with something extremely risky, such as putting up a lot of funds in a cheap coin, to get an insane return if it is going to go up, or you may go with something really safe such as going for long-term on BTC.