A harmful stereotype that has been encountered about Brainly is not directly about Brainly itself but involves how stereotypes in general can be harmful by limiting someone's ability to develop personal skills and pursue professional careers. Stereotyping often leads to self-fulfilling prophecies where individuals internalize limiting beliefs imposed by society, which can negatively impact their motivation and performance.
If referring specifically to stereotypes encountered on or about Brainly, it may be about users or communities stereotyped in ways that affect their learning or interaction, but the key harmful effect of stereotypes in general is that they restrict growth and opportunities for those stereotyped.