It’s easy to get pressured into thinking it’s your responsibility. There’s also the risk that an unhappy company will make a non-copyleft clone of your project, pump resources into it until it’s what everyone uses by default, and then add proprietary extensions so no one uses the open-source version anymore, which, if you believe in the ideals of Free Software, is a bad thing.
Being mean is willfully making people around you feel worse. Being cringe is negligently making people around you feel worse. Once you’re aware you’re cringe, if you do nothing to mitigate it, you’re being willfully negligent, which is just as bad as doing something intentionally.