Just because a Produce is making hiring/firing decisions doesn't mean they are destroying the franchise/film. Directors are not benevolent. Most are too narrow focused to understand the big picture. They need outsiders (producers) to reign them in. Directors are focused on performances and storytelling but their visions can either be too limited or too grande, someone needs to find the balance otherwise the Director will just do wtfever.
More shooting angles isn't a negative. It's perfectly fine/normal. You want a lot of angles/options. Some directors either don't know how to coordinate multi-cameras or are so narrow-focused they just don't care because it's not part of their vision. And many just don't have experience with large productions. If you limit yourself then the studio will be sinking a ton of time/money into reshoots, which aren't easy tbh. The set might have already been repurposed and now you need to recreate it the way it was to do a 1 second reshoot to get the right angle.
I remember in the documentary for LoTR, Peter Jackson flew to Andy Serkis home to shoot some footage of Serkis because they were missing an angle, even though they would CGI everything anyway, he still wanted Serkis' performance. Imagine if it wasn't CGI, they just wouldn't have the angle at all.
Acting coach is whatever, this is a tough film to make since he needs to replicate someone else's performance, it's very understandable that a coach is brought in to help sync things up as best as possible. Should have had the coach sooner, but certainly not a red flag even if brought on later.
Film-making in general is not often flowers and sunshine, it's stressful for most people. Tight deadlines & budgets will do that. It's easy to write an article that all hell is breaking loose when 99% of film production is stress & craziness. Honestly, the editing is probably the "relaxing" time, but you're still stressed if you got everything. Cause if you miss just 1 shot it could be budget-breaking.