Ah yes, just alienate a good portion of your established fanbase by throwing away the entire established cast.
Also, Wesker already had a “son”: Jake. And
is the one who is alive, which is also not a retcon but was set up via files found in RE 5. They actually do set up a few things, you just have to pay attention. Granted, you’re using the word “retcon” too loosely to begin with. For example, Spencer being inspired by Miranda is not a retcon, it’s just new info being provided without contradicting existing info. If a prior game had Spencer stating his vision for Umbrella was entirely his own without anyone ever inspiring him to do so (and as long as there was no reasonable possibility that he was lying), then 8’s reveal would be a retcon, but I’m pretty sure Spencer never said anything specific like that. Claiming it‘s a retcon is like saying Vader being Luke’s father is a retcon. Yes, nothing in 4 hinted at it, but it didn’t contradict anything barring 6 now having to justify why Obi-Wan lied to Luke.