That is the point. It is a terrible idea to provide full administrative privileges to something you are testing. I.e, it does not need to remove EC2 instances so it is a bad idea granting it against you AWS account.
If the tutorial provides a policy ready to copy & paste with all the required privileges, you will be able to customise it better or just using it as it is.
If the tutorial provides a policy ready to copy & paste with all the required privileges, you will be able to customise it better or just using it as it is.