This may be a nit or it may be something deeper, but I think you've jumped the rails when you attempt to associate Hindu nationalism with TESCREAL. Hindu nationalism is a much bigger (and older) phenomenon than anything happening in SFBA.
It's a word to get people to 'rally around' because the negative acts of Theil etc are just not easily defined or incorporated and therefore might not resonate very well.
TESCREAL is like 'Rothschild', a nebulous 'stand in term' for what might be some very concerning actions, but which is nevertheless 'not real'.
Skip the boogeyman and understand the real problems of concentrated power and egos.
Where would you start.
Or contemporary famous people. Michael Jackson. Donald Trump. The entire Epstein Saga.
It's the oldest story.
Just study powerful people, they're all wonky.
Powerful people are not 'checked' by those around them - they are rule setters, not rule takers.
Also - they have enablers to make them extra crazy.
There's like an 'inflection point' along the the path to power where the crazy really starts to take off.
It's why Warren Buffer, Bill Gates are generally pretty good men. They're constantly looking right into the Eye of Sauron yet they remain relatively normal. They probably have normal people around them, and Buffet's lifestyle is down to Earth, just the numbers are big.
I don't think this is because the author is a Muslim himself; but rather that he has bought into the frame that Muslims are marginalized and Hindus are not, and therefore any technological phenomenon in the world that seems like Hindus use successfully to advance their interests is fascist, and any technological phenomenon that seems like Muslims use successfully to advance their own interests is not worth talking about in the context of fascism.