Whether burned forests are ever regenerated at all is something that I'm incredible sceptical about - there's very little oversight into companies' claims. Even if they are being replanted, you are tearing down potentially primary forest and important habitat and replacing it with tree farms.
Finally, burning wood is incredibly polluting and awful for anyone in the region of said power plants.
What happens is that combustible waste and young growth (especially the bits unusable by the lumber industry) get burned. This is a cylcle, not to be compared with coal or oil.
Yes, it's still polluting.
I wouldn't be so sure.
https://www.bbc.com/news/science-environment-63089348
https://www.politico.com/news/magazine/2021/03/26/biomass-ca...
https://www.nationalgeographic.com/science/article/estonia-h...