Let's not forget an important distinction here. This man is not making any of these things, and he isn't capable of making them. But, he is capable of directly and indirectly impacting the people who are capable of making them negatively enough that we get utter failures like the cybertruck.
Don't give him more credit than he deserves.
What plex container are you using? I would recommend the linuxserver one. I believe you may be running into this:
EDIT: I misread your post, you're using network_mode: host?