Aung San Suu Kyi was controlled opposition, like a legitimate case not just as an insult. Her only role was to launder the reputation of the Myanmar government, where the military has never given up full control. And it worked extremely well, the US reduced sanctions and she was diplomatically welcomed with open arms in the West, also it allowed Obama and Hillary Clinton to constantly brag about how they democritized Myanmar.

This is despite the fact that her democratically elected government couldn't make any meaningful reforms becuase it always had the open threat of a military coup looming over their shoulders. Indeed the only thing Aung San Suu Kyi's administration actually did was publicly defend the military, in both media and at the International Court of Justice, for doing 'Come and See' to the Rodynhia Muslims and other minorities in Myanmar.

She won a landslide electoral victory in November 2020, which the military say as a threat, or she was just not a useful figurehead anymore, so the military removed her. We will see how much protest there is, but I doubt we will see anything other than continued military rule. How smoothly the takeover happened should say something about how much power her government really had.

Edit: Also I don't want to let her off the hook, even though she had little to no actual governmental power she had an incredibly powerful platform, to both the world and to people in Myanmar. She was surrounded by thousands of cameras waiting for her to speak out against the genocides the military was perpetrating and about how deeply the military still controlled the country, but she didnt and was content to play-act as the president for 6 years and then get ousted.