Im not aware of any dyanmic changes with streaming. Try uploading the version before the “mastering bot”. See if you percieve it as retaining the dynamics.
All streaming does is analyze the loudness of what you upload and calibrate it with a global offset. Meaning a modern mastered hard rock song might get statically turned down -10.5db to meet their calibration level. Before its mastered, it might only need to turn it down by 2-3db….to make the same level.