This. Scrum is just a way of operationalizing the basic principles behind the Agile Manifesto while putting them in a way that can be communicated and understood outside of dev/product organizations. No Scrum Master/Agile Coach/Product Owner, etc. worth his/her salt will tell you to slavishly stick to every piece of Scrum as long as you get the basics (see the manifesto) right.

It is, however, a somewhat useful tool for helping you get this running in the first place (especially in organizations where there is a lot of chaos to begin with, i.e., upper management regularly changing the product scope and release timeline based on the color of their coffees, etc.).