Welcome to the forum. As far as your question: Yes, it is a sharp instrument-learn to use it properly and respect it and not fear it. How many times have you ever heard of a serious shaving injury?
Danger factor-? Drunk driving,buying a new 150 horsepower sport bike with no motorcycling experience-giving a 17 y/o kid a new Corvette-now,IMO, they are "Danger Factors".
Seriously,given the history of shaving- men have shaved with Str8 razors longer than they shaved with modern safety razors. Spend some time lurking about on this forum. ASK QUESTIONS- that is how you will learn. Danger?-

Nope.....I've gotten FAR more nicks and cuts from DE and "cartridge" razors than I have with a Str8.