Garibdas ji in his bani in Sat Granth Sahib is criticising the Hindus and Muslims, and their priests -Pandits, Qajis and Mullahs, for eating meat of innocent beings of that Supreme God, and then expecting that God will send them to Heaven despite this sinful act.
How tobacco (तमा + खू = तमाखू) originated? What is it and How Tobacco is a Hindrance in Achieving God?
Tobacco is one of the biggest hindrance in the path of bhakti. Those who do bhakti and consume alcohol and tobacco at the same time can't achieve God. Possibly this is why tobacco is forbidden in Sikhism and is not cosumed by Sikhs. Consumption of tobacco has been described as the most sinful act and the biggest hindrance in achieving God. Even offering tobacco to someone is highly sinful.