Is it easiest or is it the one he actually signed to fight. Jones already signed to fight Stipe before Tom was even in the picture and out of diapers and holding the UFC interim belt. Why should jones break a contract that he had already signed to fight some kid in Tom. We know Tom is now holding the interim belt but he was not when jones and Stipe was made and agreed upon. Sergei was the fill in for Jones and Stipe and not Tom, because Segei was thought to have been a better fighter at the time and did not have a loss to Blaydes, so had Stipe gotten injured Jones would have fought Sergei.
At the end of the day it is really about a contract/agreement that people want voided for someone else. You want Jones to break his promise and deal with Stipe to fight Tom.