That is important the terms and conditions + code of conduct and community guidelines, here is quote of the official statements for this support site and the default for new sites unless edited/changed:
If You See a Problem, Flag It
Moderators have special authority; they are responsible for this forum. But so are you. With your help, moderators can be community facilitators, not just janitors or police.
When you see bad behavior, don’t reply. It encourages the bad behavior by acknowledging it, consumes your energy, and wastes everyone’s time. Just flag it. If enough flags accrue, action will be taken, either automatically or by moderator intervention.
In order to maintain our community, moderators reserve the right to remove any content and any user account for any reason at any time. Moderators do not preview new posts in any way; the moderators and site operators take no responsibility for any content posted by the community.
This clearly recommends and encourages people to flag anything and everything considered to be “bad behavior,” which can definitely be a reason why people are flagging things more often than not. This also puts a lot more responsibility on moderators to deal with problems/arguments, as opposed to guest members having more opportunity to work through things amongst themselves.
Could start a new topic about overall moderation + flag philosophy and to develop drafts for alternative community guidelines to this. I spent a lot of time reading through these guidelines and have found difficulty with a lot about how these are written for my own ideals about launching new sites, may be best to start over completely with independent policies for each site.