The Constitution gives the judges enormous powers in the form of Contempt of Court act[1]. Unlike other draconian laws, this is not even talked about in open due to fear of courts. You have already mentioned Prashant Bhushan's case. There is this case of Justice Karnan, a sitting High Court judge, was punished for raising voice against some senior judges[2]. The outrage at the time was quite limited as he is not a known government antagonist. Ironically, Prashant Bhushan was also cheering the sentencing of Justice Karnan[3].

1. https://www.thehindu.com/news/national/the-hindu-explains-wh...

2. https://theprint.in/opinion/india-turned-a-blind-eye-to-just...

3. https://twitter.com/pbhushan1/status/861823918289571841?ref_...

How is that evidence for ‘capitalization’ or ‘rubber stamping’?

What you may be complaining about is why is it illegal to contempt Indian Judiciary —- which is a different topic.