I dunno, it looks like you're the one struggling with objectivity here tbh. Some people are just talking about people in their 70s not voting labour anymore. The data - and doorstep conversations, and literally everything we know about the voting intentions of the older cohort right now - says that's true.
You're correct in all that.
I've bolded the bit you're most right about
That doesn't mean WouldBe is all that objective either.