The AD 30 Jerusalem Church’s official position was that Joseph entombed Jesus.
So? Couldn’t it simply be that…
The belief that Joseph entombed Jesus remained uncontested.
This is relevant because competing accounts would flourish if the story were false.2
Joseph formally buried Jesus in a tomb. (We will have a full page on this.) If true, it would help answer our question because it entails that he therefore placed Jesus's body in a tomb.
Non-disciples oversaw and dealt-with Jesus's corpse.
This is relevant because Joseph of Arimathea was a disciple.
So? Perhaps Joseph of Arimathea was a non-disciple and yet placed it in a tomb.
Tomb-type burials were almost always love-motivated (done by friends/family/disciples).