You won't find anything at all on main stream media but it appears Julian Assange is being physically mistreated in the UK right now. Honestly, I am wondering how soon it will be he goes the same route as Epstein:
https://www.independent.co.uk/news/...ng-hmp-belmarsh-wikileaks-trial-a8936136.html
You won't find anything about him being physically mistreated in the article you linked, either. It only indicates that he has been transferred to a medical wing due to physical deterioration and weight loss. There is absolutely no indication that he is being mistreated.
Also, to answer the question in the title of the post: "Yes".
The article I posted is a main steam article.
I could have posted other articles that show him in a near death state. But had I posted from those other sources you would be attacking the credibility of those sources. And then placing your hands on your ears and shouting "la, la, la la, I dont hear anything" .
So I posted a main stream article. And it should be telling what they even can admit.