At the end of Mr.Robot S4E4,
Tyrell Wellick is shot and walks off into the woods where he follows a screeching sound to find a glowing light. His actual death...
...is never shown and he is never seen again for the rest of the series including the finale.
What happened to him?
Has there been anything (eg. interviews, blogs, etc) from the show insiders like the writers as to what actually happened (even them explicitly saying it was written to be vague)? Any known out-of-universe explanations from insiders, eg. actor scheduling issues, etc?
A possibly related aside (and would need to watch the episode again to double check), but
when Whiterose's machine is activated/running/exploding during either the final or semi-final episode, that same sound as when Tyrell finds the pulsing light can be heard briefly (possibly just show reusing sound effects).
(Will try to watch again and add timestamp when can).