It has. Tax and excise on tobacco here has been a cash cow for the federal government. However, they (government) claim we are balancing the cost of treating smoking related illness in our public health care which is federally funded. I'm inclined to go along with that.
Tax increases have seen only slight decrease in smoking over the last 5-6 years. Annual decrease is now less than 1% to an all time low of 11% as of Jul 2020 from 12.2 in 2016.
Disclaimer: Some sources statistics differ by about 2-3%
ref: Cancer information and support | Cancer Council