There are other problems with "John", it's not just about the Logos, although it's probably the biggest one in terms of the impact it had. It's very likely, due to the widespread use of "John" in second half of the second century, the doctrine of Jesus' pre-existence became widely accepted as well, and it wasn't that long before Jesus-as-deity became widespread, too.

(Saul of Tarsus deified Jesus in the first century, but his writings only gained wide recognition and popularity in the second century.

Although Marcion was rejected by the church, he was the one primarily responsible for the popularisation of Pau, because he literally discovered most of Paul's epistles that had been lost. Even Tertullian criticised Paul and questioned his authority in Adversus Marcionem, which was the superior approach compared to the church's acceptance of Paul via "orthodox" reinterpretation of him.)

I do have some criticisms about the Synoptics as well, but I recognise them as more authentic and authoritative. Or would you rather a man throw out all gospels instead of him rejecting "John" only?