The reality is that people and businesses change and sometimes those changes don't align.

Mature professionals understand this and if you're fired simply because you are very competent, but don't work well with the new business behavior, it's not surprising that the person who fired you would hire you for a different role. It is just not always possible to find a good role for someone in a particular business.

I'm sure it's rare, but I can certainly understand how it can happen.