It's likely that the rumor about him being "kicked off" is a misunderstanding or a fabrication. There were, however, other reasons why he might not have continued with the show after its initial run ended:
* Age and Retirement: Bob West was in his 50s when the show ended. He may have chosen to retire from acting, or simply wanted to pursue other opportunities.
* Show's End: Barney & Friends ended its run in 2009. As the original voice actor, it's natural that he would not continue in the role if the show was no longer being made.
* Change in Direction: It's possible that the creators of the show wanted to go in a different direction with Barney, perhaps with a new voice or a different approach to the character.
It's important to note that there have been other actors who have voiced Barney, including Dean Cain, but Bob West remains the most well-known and iconic voice of the purple dinosaur.