Your entire speculation rests on the claim that it was anonymous. There is absolutely no support for your proposition that the source(s) of the evidence were anonymous to Tacitus. This is quite like the "missing" text argument that I destroyed a few days ago.
Further, the history of Pilate was of course neither anonymous nor unreliable.
Tacitus is almost universally accepted as perhaps the earliest third party source of corroboration of followers of Christus in Rome a generation after he suffered the ultimate penalty under Pilate.
Nope.
I am not speculating about anything.
The source is anonymous to us, because Tacitus makes zero mention of where he ever got any such beliefs from. That is the very definition of anonymous hearsay.
), you say that further eye-witnesses were Nero (supposedly not born until 37AD) and Pontius Pilate!! lol.