Yes.
For a long time identifying bacteria required growing them on different media. If then bacteria didn't grow on the media,, we didn't know what it was. However for most pathogenic bacterium we did figure out how to culture them.
Then molecular biology advanced to a level where we can amplify and sequence a single bacterium's DNA. This has led to a continuous stream of new species discoveries from different environments.
Finding a new pathogenic bacteria for humans is still a rare discovery.
Firing middle managers is a fun way to kill the company. Not that cleaning house is a bad idea. Unfortunately the people making decisions of who to keep and who to let go are usually idiots.
Middle Managers are promoted for two reasons: technical expertise and ass-kissing expertise. Now the technical experts tend to not mix well with incompetent parasitic c-suite types idiots. The ass-kissers are beloved by the c-suite as that is their only role in life.
So when firings come around guess who they get rid of? Then 1-3 years later everyone is shocked when everything starts to fall apart.