its a verb used to describe the act of overcomplicating a good/ok idea and then making a mess which decreases the progress of the idea as well as harms limits its reach.
in short f***ing up.
microsoft: let's build a piece of code which helps common people write word documents. yes now let's add a few 100-200 features so that common people have to watch tutorial to learn how to operate our software.
Google: yeah let's remove those features and make it easy for people to use.
Discord: yes, we just made the perfect messaging and chatting platform for teenagers. Now let's f***ing put out more an more features to ease the use.
teenagers: stop f***ing microsofting.