They are not ethnic minorities. They are converted christians & muslims.
Here I meant Minorities (in this case Christian) with Chin, Kachin, Karen ethnicities, etc, being the rebels.
Aung San Suu Kyi was a western agent which should have been obvious by the way she was awarded Nobel prize. She pretended to have changed and formed a government only to use deception and create situation where her party would be the only dominant party through huge inflows of foreign funds, selective empowering of party agents and hijacking the election mechanism. So, Junta ousted her again
It's always been the case in Myanmar. Military Junta ruled Myanmar since most part of its existence after the independence.
Total Democracy will never be possible in Myanmar.
Aung San Syu Kyi is herself the daughter of legendary Aung San, also known as 'Father of the Nation', 'Father of Tatmadaw' and still revered in the country both by civilians and Junta.
China does not like the rebels as it sees them as Western agents and hence supports Junta.
China does things ambiguosly, it appears to support Junta but in the background it also supports
rebel forces like the Myanmar National Democratic Alliance Army who are ethnically Kokang Chinese.
China has historically supported the ethnic armed organizations in its borders and armed them through the United Wa State Army.
During the 2021 coup China adopted a pragmatic approach. It engaged the Junta publicly but kept its distance and hence maintaining ties to the ousted National League for Democracy party as well as
friendly ethnic armed organizations along the border.
So China’s turn towards the Junta has proven a poor bet. Considered together, the Myanmar's military Junta is now more vulnerable than at any time in the past half century.