I lost at lot of faith in the author's judgment at this point. I know this thing worked out and it was the right decision to port things over to React (and correct the bad decision to count on the Angular team to deliver SSR on their timelines). But you need to be able to explain things to the business without this sort of nonsense. I would be really concerned if I heard a manager saying something like that. It's not an argument, it's just a "trust me" that raises the stakes and pressure around the project.