You are selectively quoting wiki (that is not always accurate anyway). Here is a piece of the other sides of the story:
The Denial of the Historicity of Jesus in Past and Present - Wikipedia
Wiki notes that:
In his final conclusions ("English summary" of the book, by Klaus Schilling), Drews emphasized that deniers (radicals, mythicists)
do not form a movement (a so-called "denial party") trying to “unite” them against an entity called “Christianity”:
Drews describes the social consequences of a denial of historicity, and explains why so many theologians and secular researchers stick to historicity, though
the ahistoricity of Jesus is scientifically as sure as that of Romulus and Remus, or the seven legendary kings of Rome. The consequences are generally underestimated.
It is quite understandable that the
denial party is unique only in that point [of the
non-historicity,
Ahistorizität], and otherwise offers
a variety of diverging explanations [each denier has his own independent hypothesis]. The church has done everything for 2000 years to
obscure and hide away the origins of Christianity, so that there’s no way to get any further without speculative hypotheses.
It is obvious that no serious researcher could claim the historicity of Jesus, unless it were the savior of the dominating religion of the prevailing culture. So there’s
nothing but Christian prejudice which keeps even secular researchers from admitting non-historicity...
The wiki author is incorrect in claiming application of the "standard criteria of historical investigation," especially with respect to contemporaneous references. Can you cite even just one contemporaneous reference? If you can't, your argument moves from rational scholarly historical analysis to mere Christian apologetics and your claim is naught but an appeal to authority fallacy.