Yes, 100%. The carbon tax is a profit-insensitive tax. It's put on critical business inputs for small firms.
Again, there are mixed views as to whether there should be a carbon tax or not, but even those who love the idea of carbon taxation are telling us that the way the current government has structured it in the carbon backstop provinces is completely inappropriate in a small firm. The concept of getting money back to incent you to reduce carbon usage in other areas doesn't hold when you get zero of that money back.
The feds did put two streams in place, when they first introduced it, for rebate programs for small firms, targeting those communities. Neither program was developed or administered any money. I think the federal government has admitted that small firms have not received any money back from this, so for them it is just a cost driver that is leading to cost inflation for them as they inevitably pass on these costs to their consumers.