I agree with the statement that if you break new land, you could emit a significant quantity of greenhouse gas emissions. What I don't agree with is that our current bioenergy system depends on breaking new land. Based on what I've seen, cropland in Canada in general has been declining slightly. Nor do I agree with the statement that you would have to break new land to expand the bioenergy system.
On June 18th, 2021. See this statement in context.