I agree with you that there does seem to be a disproportionate number of posts on this thread about the possible fault of the Stena. Contrast with this thread for example: Another Tanker Collision…
I also agree that the scenarios you mentioned are highly implausible.
That said I think there are more plausible but still unlikely scenarios, for example the Stena may have expecting a pilot soon and was ready to maneuver. I think we can agree that’s possible but unlikely.