So from a cursory reading, these protests were originally because a quota system for government jobs, originally intended for descendants of veterans, was in the past paused, and now has been reimplemented as set-asides for politically favored demographics?
Yes, that’s one part of the initial protest.
See https://northeastbylines.co.uk/news/world-news/report-from-b... for details.
Unfortunately Bangladesh’s democracy was slowly suffocated, with the only party in power liking their corruption schemes a little too much to allow for fair elections.