Terry Silver's Health Problems Does it feel like a plothole?

https://preview.redd.it/99er5fus9lme1.png?width=1202&format=png&auto=webp&s=a1bc1b5580046502a5e85f3ee7f69cbea86ebe63

Is there something deeper to Terry Silver's Health problems?!
Silver is my all time favourite TV villain so I enjoyed making this one!

It felt like talking about Terry Silver's health problems was a little just dropped on us and forgotten about. I know Johnny mentions it in part 3 but I expected that we would have understood a bit more about what was going on with him... this video is a pretty interesting concept.

https://www.youtube.com/watch?v=_dMPw-5pVuA&ab_channel=ChaseEverything