Yes they are. Twitter is the culprit to the extent that they don't value free expression. If they valued it in the way it is meant in the US then they would all

Yes they are. Twitter is the culprit to the extent that they don't value free expression. If they valued it in the way it is meant in the US then they would allow their users to criticize their government. If the government says that's illegal then Twitter should not do business there. Obviously, for Twitter, it's a business decision. They don't care about free expression and do care about making money, so they censor Indians (and others) and comply with censorious regimes. It may not have been Twitter's idea to censor. Left to their own devices they might prefer to censor nothing. However, it is certainly Twitter's action to censor people and they are fully culpable for that.