If you’d like another data point, I’m also Swedish, and if I saw a bedspread/överkast with an Indian name in an otherwise Swedish, ”punny” context, I would 100% think ”oh, because of the caste system”. I find it very unlikely that they would’ve gone for this name without making the connection.
The bit connecting Indira Gandhi to a high/”over” caste is a bit more tenuous to me, I’d just have thought the idea was as simple as caste -> India -> Indian name (Indira), but it’s certainly possible.
I mean, obviously possible but I suspect that the clumsy translation adds a lot of obtuseness to it. In Swedish it looks straightforward enough that you only need to squint just for a moment when you see "överkast" and "Indira" together and then you get that familiar feeling of "How could I ever miss that?".