I suggest him to go for an air-gapped system. A cold wallet on air-gapped system is much safer than hot wallet, and if the OP follow my suggestion then surely he'll be safe from hackers and scammers.
Stop spreading
incorrect information on the tech boards. Apart from being too complicated to recommend to a novice Bitcoin user, your "explanation" of a cold wallet is funamentally wrong. At best, it will give a false sense of security, and at worse, OP will lose all his funds.