This is a time of day thing and not because nobody wants to join them.
Someone takes the often ungrateful job of a warband leader and establishes rules to make it easier to coordinate the warband. Nobody is forced to join, if they can't make an minimal effort to join e.g. disc.
There are valid reasons why someone can't join disc but those are individual issues and don't affect anyone else.
Open warbands can be joined by anyone but there can be rules to stay inside.
You seem to be too lazy to lead your own warband but at the same time you want to force others to build warbands by your own rules, e.g. free for all and no commitment.
Those warbands can't be organized and lead is hardly possible. Why would anyone do this job and lead such a mess?
Some warband leads use chat commands but out of experience I can say many players don't read chat, especially not during fights.
If anything your behavior is toxic. You demand others to play by your rules, while at the same time you don't want to do their job and just be a regular warband member.
