I have not heard of Christians having a problem with any Modi policies.
I have heard of Indians causing their own problems with them.
Here is a link to a 2019 article from that organization detailing how India has risen to the number 10 spot on their 'Watch List' of countries that persecute Christians.
Here is a link to their 'World Watch List'.
Here a link to details about persecution of Christians in India.
A number of Indian States have passed 'anti-conversion' laws. Pastors are often arrested, beaten and sometimes killed for preaching the Gospel, being accused of 'forcing' people to convert to Jesus. Instead of the police arresting the attackers, those teaching the TRUTH are then charged under those 'anti-conversion' laws. Modi has never renounced such laws AND his BJP wants to introduce a NATIONAL 'anti-conversion' law.
Are Christian 'Indians causing their own problems'? If you consider preaching the Gospel to be 'causing their own problems'? Then yes, I guess they are! If you do a quick internet search of Christian persecution in India, you will find PLENTY of examples!
Now, you HAVE heard of Christian having problems with Modi's policies!