Victims of Roman crucifixion were normally left on the cross or thrown into common graves. Isn’t a private tomb from a member of the Sanhedrin itself suspicious?

This is Bart Ehrman’s argument and it deserves a direct answer. Roman practice varied by province and circumstance: Philo and Josephus both record bodies released for burial, especially around festivals, and the skeleton of a crucified man named Yehohanan, found in a family tomb in Jerusalem, shows that crucifixion victims could and did receive proper burial in Judea. Joseph of Arimathea is an unlikely invention: a member of the very council that condemned Jesus, named in all four Gospels, whose story gives the church nothing except the embarrassment that the disciples themselves did nothing. Most scholars, including many skeptics, accept the burial.