After wildfires, trees naturally re-grow.
They will eventually, but in the amount of time it takes for them to regrow, drastic environmental impacts may happen which destroy their habitat and make it no longer a fit for that particular plant. A simple example would be mountain flooding after a wildfire. When conifers burn, they will leave a sheet of wax on top of the dirt. When snow runoff season begins (or there are heavy rains, as seen in Colorado in 2013) the ground is not as good at sponging up the moisture and releasing it slowly down-river over the course of the season. Instead it beads off the surface and heads straight to the bottom, causing runoff to be more violent and increasing the risk of flash-flood events.
With those increased events, the habitat can be altered dramatically, possibly to the point where the trees that loved living there no longer find it suitable. Willows, dogwoods, cottonwoods, etc will all suffer as they are plants that would have increased risk (since they like living right next to the river). To compound the issue, there might be other plants that are now able to grow in areas where they couldn't before. The result of that is increased monoculture of forest species, which of course leads to increased risk of disease.
Can you begin to see the feedback loop? Increased disease, increased fire risk, increased flood risk, increased environment destruction, increased monoculture, and repeat.
The problem with wildfires now is that too many years of fire suppression has led to these situations where instead of smaller fires burning and replenishing areas periodically, we have massive fires that destroy massive areas and make it more difficult, if not impossible, for the area to recover.
Some deforestation is replaced with new trees, but not all.
I'm not sure I understand their definition of "deforestation". Is that only man-made, or does it include the work of insects, blight, and other maladies that wipe out huge swaths of forest?
Pretty much any time nowadays someone wants you to panic
Do you think that might be related to the increasing number of things that are totally fucked on our planet? I totally understand that hyperbole and sensationalism sell and that we are fed a steady diet of both, but don't throw the baby out of a moving car with a glass of water ... or whatever that saying is.