The Faridkot Tika earned its standing honestly. For decades after 1906 it was the commentary Sikhs actually had, the only complete printed guide to the Guru Granth Sahib's verses, and its Nirmala authorship shows in every entry: the text is read through the same Vedantic and Sanskritic philosophical vocabulary the order had used for generations to expound Hindu as well as Sikh scripture, treating concepts like maya and Brahman as the natural language for explaining what the Gurus meant.
That reading did not go unchallenged. In the early twentieth century the Singh Sabha reform movement and its more assertive Tat Khalsa wing argued that Sikhism needed to be understood on its own terms, gurmat, and not through inherited Hindu philosophical categories the Nirmalas and the related Udasi order had long applied to it. To reformers building a distinct Sikh identity separate from the wider Hindu tradition it had grown up alongside, a Sanskritized Guru Granth Sahib commentary looked like exactly the kind of blurring they wanted to end. The criticism reached the Tika directly, and Sikh scholarship has argued the point ever since without fully settling it. What has not been undone is the Tika's historical place. It remains, whatever its interpretive lens, the work that first made a complete printed Sikh scriptural commentary exist at all, still kept in print by Punjab's own Languages Department more than a century after Raja Bikram Singh commissioned it.