a) The lead is four sentences long, which is quite inadequate to summarize this article. b) The writing problems start in the lead, as the third sentence is actually a fragment. Other grammatical issues ("supported him in his studies, activities"; "have differed with those from the RSS") indicate that the article needs copyediting before being brought back to GAN. Other sentences are more unclear than they are ungrammatical ("he compares the creation of a Hindu culture propagating the concept of acceptance of a shared Hindu heritage.") Some statements, like (including encouragement to obtain a Law degree..., have opening parentheses, but no closing parentheses, which makes the writing difficult to follow. A paragraph refers to "Golwalkar's choice" or "his choice"; Golwalkar was selected, but someone else made the choice.
The lead asserts that Golwalkar was "widely noted to be the most prominent ideologue of Hindutva", but the body of the article never really demonstrates this. There are other points in the entry that require elaboration, such as the statement about Golwalkar not completing a doctorate because of his father's retirement.
The article appears to mostly follow
WP:NPOV, but in the Ban and arrest section, there are several uses of quotation marks that should be carefully considered in light of
MOS:SCAREQUOTES.
It is stable.
No edit wars, etc.:
It is illustrated by images and other media, where possible and appropriate.
The infobox image was uploaded as "own work" created in 2013, but the subject had been deceased for 40 years by the time the image was supposedly created. The image should be eligible for fair use, but a Creative Commons license doesn't seem appropriate.
Overall: Because this article is far from meeting several of the GA criteria as noted above, a detailed review is not indicated right now.