I have been following this issue for the last few days.
Am a bit puzzled by the timing ... good or bad ... did they really need all of this dick waving during the Two Meetings / Covid-19 / Trade War?
Historically, border issues / erosion has been going on for decades and there has never been any strong Indian action or any international attention. The Indian conspiracy theory is that a weak and unsupported India is what everyone needed for the last few decades, as China had to prosper at all costs.
Should be interesting to see if this can be de-escalated...