I'm not sure he did lie. The email does not demonstrate a lie. To "meet" (what the email asserts happened) isn't to have a meeting. And if the "meeting" wasn't on the schedule, which appears to be the case, it was likely perfunctory. Nice to meet you. How's your trip. Hunter speaks highly of you. How's your trip to D.C. going. Do you remember all those type "meetings" from 5 years ago?
But if he did lie, so what? We have the entire hard drive, his emails, texts, files, photos, and there's nothing to indicate the "meeting" was to ask for favors or that any were done by Joe for Burisma. We're nearly 5 years out from the Shokin mess, 4 years post VP. Nothing. The email doesn't even hint to that, so where's your concern? Clinton lied about a BJ, Bush lied about WMD, Obama lied about doctors, Trump lies about everything and anything, Biden lied about having a brief meeting. I can't manage to work up even a trivial concern about that as it relates to who is our best choice for POTUS.
I guess the strategy here is to tell so many lies like the current occupant that they no longer matter anymore. Trump lied is kind of like 'dog bites dog' or 'puppy pooped on the rug.' BUT BOTH SIDES!!! BIDEN LIED ABOUT....A (ONE) MEETING!!!