another indian here: probably not. given that indian parents are obsessed with their social status since most people of that generation were raised in a traumatic environment as well (that was also obsessed with the rest of the world's perception of them, that took away individual intellectual/emotional/identity agency), so they will likely keep seething on:

1. being "abandoned" by their children
2. while seething on the very existence of their children or obsessed with working on "damage control" with their society

Some may disagree, but the root is very much shame, imo.

A lot of the parents of gay peeps I know were pretty chill about queerness, until their kid turned out to be one and they were shamed by their community. One of them started crying immediately when their kid came out and screamed about what society would say, but then adjusted and decided to prioritise their kid after a few hours.

I usually find Homophobia to be instilled through religion or hate media - In that sense There isn't really any systemic homophobia through non-abrahamic religions, which make up most of the country. That said, there has been a recent trend of few online personalities (few religious ones among them) copying western right wingers and denouncing trans people - which I find worrisome.

Most of the homophobia I have encountered I'm people here has usually been instilled through movies or online communities or through interactions where gay is used as an insult.

A homosexual kid who moves away will probably still be targeted, sadly. It's the "rebellion" that's the issue - there are many cases of honor-obsessed weirdos that have targeted their family peeps who went against the norm in different ways.