[manfre]

The discord should clearly state the community standards, including some variant of "don't be an asshole". Most importantly, the standards must be enforced.

These people, while knowledgeable, drag down the community with their toxic personalities and discourage others from participating. Who wants to ask a question if there is a high probability of being called stupid.

Warning and then ultimately kicking these individuals improved things as a whole. Others stepped up to answer questions and mods handled fewer complaints about the asshole's style of communication.