Not - secure or not secure - it's a scale
You can't say a system is safe or not safe, it's a scale. MacOS is more secure than Windows and Linux - maybe much more secure - for architectural reasons.
Hackers are still going for low-handing fruit it would seem. Yes, Apple takes security seriously. Security means certain things can't be done, or you must live within the restrictions. Seems reasonable - security has by far and away become the most serious issue in the world of computing and its interaction with the physical world.