Not doubting it, but if we are going to look at images we must acknowledge a child blinded by a rubber bullet in the NYT article means they are not firing live ammunition.
The child with their hand missing on Twitter, shows they are using live ammunition.
I would say the burnt body photos of Aye Ko are the most concerning. To have wounded him then burned him alive on burning tires is a move towards brutality I don't understand from a military on the general population in a non failed state. Since these solders are the general population, the news is not indicating this is sectarian.
Death toll sources -
Some are using - https://www.myanmar-now.org/en/news/cities-terrorised-as-jun...
BBC used - https://aappb.org/?p=13901
How the military works in Burma.
Soldiers are recruited from poorest, and least educated parts of the country from the young age - prople easiest to brainwash into belief of their entitlements, speciality, and other moral corruption.