In its efforts to create a neat "conservative" / "dharmic" narrative, it glosses over many sources of radical thought in India (both Astika and heterodox)
Even if the country were untouched by "abrahAmics", there would still be "politics" in India
As though the rest of the H-sphere was somehow "pure" / untainted by "innovation"
The rise of the bhAgavata religion, sectarian Vaishanvism, pAncharAtra theology was extremely radical
Its radicalism was acknowledged even by traditional commentators
Though it operated within the vaidika / astika fold
Compromises were struck. So we seem like one happy family now
Was bhagavad Gita always the numero uno text for HIndus? No
It was a radical text in many ways. Originally championed by the sAtvatas likely
Over time became this pre-eminent Vedantic text
Many practices have been kali varjya for 2000+ years though they were extremely prevalent in earlier times
E.g. Widow remarriage. Niyoga, widespread animal sacrifice in Vedic yajnas
Resulting in new norms
Today we take those norms for granted
Defending these norms is "conservatism" for us
Back in 200 BCE, defending these norms was a radical thing