Some Indian sources may have made those claims, but those were rejected pretty quickly by the Indian Army and journalists wit Indian Army sources. Like I said, the Indian Army clearly said all peaks occupied were on its side of the LAC, which obviously means the Indian perception. The Chinese perception is completely different.
I believe that video was on Rechin La, but on the Indian side.
The LAC on the southern area (of Pangong) is pretty much bilaterally agreed upon. The claim lines of course vary that goes without saying! Saying that China claims to Thakung therefore it loses is abysmally stupid. China was never between Thakung and LAC after 1962 (giving the advanced territory back to India and for claims to control line, leaving as dispute and buffer which eventually failed). Also China has offered to demarcate to points east of China's claim lines which not only suggest China has no intention of taking up to its claims but claiming further is conducive to achieving minimal actual objectives. In any case, the former point is the main one here. It's not like India pushed PLA out of Thakung to blue line. You yourself said that India put troops there (funny how it has a camp already so no it didn't "put" troops there because they were always pretty much a stones throw away) to counter any potential PLA ingress. Well that would suggest PLA didn't ingress right? So where's the victory? The reality is the opposite. India actually ingressed in the hopes of getting captured land to bargain with for the north and failed after a week or two in China.
China does claim a little further west of LAC (on the south) and India claims A LOT east of LAC (the legacy dispute, 100%). China hasn't occupied or stepped beyond the blue line in the south of pangong lake. Even after confrontations on the south end were apparent, PLA stayed on its side of LAC - eastern half of Black and Helmet top peaks etc.
If those vids used as propaganda by Indian gov was on India's side of Reqin (Rechin) then 1. that's so fucking embarrassing that's like China making a vid of PLA in Tibet and screaming victory and Jai China lol and 2. India honestly wouldn't make a big deal out of it, negating point 1, while China wouldn't have officially declared that India has intruded and if untrue India would challenge and deny it officially but they never did. In fact India spread those propaganda vids to make Modi look good.
South of lake is actually relatively stable. China doesn't cross the LAC and India has been expelled from China's side of Reqin after a quick excursion and picnic in it with some nice propaganda vids like that Modi hospital visit.
The only little part that is disputed south of lake (not counting the other major disputes) is a place where both apparently are in standoff as well but again the major issues seem to the the current standoff point north of Pangong - Depsang, Gogra, Hot springs etc. Perceptions of LAC actually differ a bit more here and claims differ far more. Again like I said in the past, China wants a buffer of the 20%, India refuses because India wants to continue claiming the 100% and hope to access it. Stalemate situation unless one initiates war. Something clearly both do not want. I know at this point jai hinds are all like "oohhhh China so weak too afraid of war" lol. Well let's just say that before this standoff China was content but India started salami slicing within 20% leading to PLA occupying Pangong F4 to F8 (4 figners into what China used to hold as control line) and then talks resulting in India agreeing to PLA disengagement on the condition that India no longer even step foot beyond F3. Modi capitulated here because it is too high profile and his opponents continue using it as a political tool against him. Elsewhere Modi has not agreed to Chinese terms of buffer or official demarcation because that would mean India completely loses any future ability to make claims on Aksai China and lands surrounding it.