Just assume COVID for everything. Different parts of the world get hit hard at different times, so supply chain of the supply chain gets all sorts of disruptions that can create random issues in places folks might think are fine.
This could be hitting Festool in different ways beyond production. With no stuff to sell, no money comes in, they may have had to lay folks off, retailers may have had to lay folks off, not for anything special to Festool, just the same reasons as any other business.
Hobby types for sure bought tools if they were in an ok place financially to do so, or not concerned about money in the near term. As COVID went on, those folks probably had what they needed, didn't want to spend more, what they wanted was out of stock, or they protested Systainer 3 [tongue].
For businesses, many may have found themselves without jobs, or not allowed to do jobs. Cut back spending on non essential items.
Festool has probably felt this just like all companies. I'm not sure if the OP was concerned about if Festool is simply failing, or if it was a question of COVID impact, or a question of festool's mental health.
If someone see's a "space available" sign in Festool USA front yard, sure be curious, but as is, I wouldn't put much thought to it. Go to any store like HD or Lowes, they are understaffed, limited hours, and keep having random shortages of products. All companies are experiencing this.