Being an introvert, or quiet/soft spoken isn’t an issue - there have been such people on the show before and some have done well. The issue - IMO - is that Ankit neither wants to play this game nor respects it. If anything, his disdain for this show, those that are making an effort to play it (excepting Priyanka) and it’s format is beyond obvious, as is the fact that he’s only there for the money and to support Priyanka.
Comparatively, the other lesser contributors (other than Stan) don’t display a consistent and blatant disrespect for the show, nor do they make it obvious that any participation they do offer is either for Priyanka or involuntarily coerced. Were it not for Priyanka’s issues with others (which he speaks in to support), and BB’s taunting - he would happily spend the season laying on the sofa and only getting up for tasks. It begs the question then - why take up something you dislike/don’t want to do? If not for free money - which is not something I can respect.