Those people claiming bitcoin is scam, they are noobs on crypto currency trying to be on hyped train just wanted to fit in and make venture with but they don't really know what bitcoin is. They are just crybabies and weak hand holders wanted to make profit fast and easy but hey that's not how bitcoin works or any crypto currencies at all.
I agree with you. People who say bitcoin is spam is the average person who wants a weak and instant income without having to be patient. In essence, if you want to get business wealth because if working with the salary it will disappear with a lifestyle that suits the workers.