Agreed with this. Some positive things that can come from this:
cross-pollination of ideas, especially across cause area and academic discipline
relatedly, preventing ideas from becoming too niche/insular—allowing ideas to be accessible from different view points within the community.
encouraging people to explore ideas they find off-putting in more depth, which might ultimately change their actions in the long-term. For example, many people come to longtermism after many years in the community.
reinforcing norms of critically engaging with ideas, learning, keeping an open mind and so on.