My friend I have done much reading on this topic. Hindi would not have reached so far had short-sighted regional leaders not accepted flawed theories.
You are just showing more ignorance than making any sense to the people who have been in South India for the majority of their lives.
I studied in a school where Hindi was given as a second language (without the regional language) and people chose and studied it. No one discriminated them.
I want to read the poems that is written in my native language and write post-modern content in my native language. For that, we need to study our native language.
If your argument is to have conversation, I learnt Hindi to be able to converse comfortably within a span of 6 months when I stated to live outside South India. No one is against it and we don't need to study Hindi in school to start conversations in Hindi.
Airports, railway stations, highways in South India have boards in 3 languages in the following order - regional language, Hindi, English.
No language is being discriminated by not adopting Hindi in school. If any languages are insulted, it is the regional languages in South India by forcing Hindi imposition.
And since you mentioned 'hypocritism' in your post, it is hypocritism when Indians learn and give exams in German before even moving to Germany but can't accept fellow Indians to learn and enjoy their native language.
We are not against any language. We don't need Hindi imposition to have conversations with people who speak other language predominantly.