Respect77, it is embarrassing to you. I have seen no reports of a mass exodus of concert goers - who may also consider themselves hardcore fans - during the OTW medley or any other time during the History concert/tour.
I am not embarrassed by it nor do I judge Michael's choice to lip-synch during it. I am quite proud of Michael for acknowledging his own achievement and I have no issue with the method he chose to do it.
I truly hope Lee will include this footage because it says quite a bit about how Michael wanted to pay tribute to his own work.
The estate seems to listen to some of the online fans' complaints and it may direct their decisions. However, such complaints have no bearing on Michael's decisions. Michael's OTW medley was his choice, I believe it was a great tribute to his own achievement, and I hope Lee will showcase that in his OTW documentary.