An Order issued by the Commissioner of Karnataka Health and Family Welfare confirms that Non-Resident Indians have to bear the quarantine charges.
The Public TV article tagged in the tweet itself has reported that the government would decide on the charges levied from the people staying in star hotels as a quarantine measure. It further stated that the occupants must bear the charges themselves.
The COVID-19 pandemic has given rise to a lot of potentially dangerous misinformation. For reliable advice on COVID-19 including symptoms, prevention and available treatment, please refer to the World Health Organisation or your national healthcare authority.