https://www.theregister.com/2020/12/17/ibm_ceo_arvind_krishna_appointed_chairman/
Having the CEO and Chairman role combined is generally seen as bad practice, and it was Enron using this practice that partly drove the creation of Sarbanes-Oxley. Checkout Investopedia https://www.investopedia.com/financial-edge/0912/3-reasons-to-separate-ceo-and-chairman-positions.aspx
Whilst I am sure there are no plans to do a Ken Lay, I don't think this will inspire investor confidence in IBM. The ship is sinking and more bits will be sold off to keep the stock price afloat, but in the end the lack of innovation and financial engineering will engulf it.