RE: the video excerpt and what Mr Scott has said: Absolute bollocks. He's just back-pedalling because it all went to shit. He owned Covenant a little more than he should have and the result is as it is.
The blame is not soley with him though, as the studio should have passed judgement on him being a little "jaded" by "the beast" and f**king given it to someone who actually gives a shit about this franchise (along with better writer(s)). For example, look at what Denis Villeneuve did with our beloved Blade Runner... a proper labour of love. Scott's problem is he just appears to be doing it to get his retirement fund in, bashing out films nice n quick and with very little in the way of artistic integrity. You can hear it in the way he speaks about these projects, it's almost like they've sat someone from accounts down in the chair.
Get out whilst the going's mediocre, Mr Scott, it'll be kinder than if the going's straight up shite, like Alien: Covenant was.