I use it to inspect video frames by frames, particularly being able to go back one frame. VLC doesn't support it, this thread about the feature is hilarious https://forum.videolan.org/viewtopic.php?t=120627
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The only time I saw him being unpleasant in the thread is when people ignored his explanations and acted very entitled. Correct me if I'm wrong on anything here, but VLC is an independent free software project developed in no small part by volunteers; they have every right to choose their technical direction and compromises, and it seemed the people insulting them were in no position to demand anything from them.