Every single mythic raiding guild on my 2 servers post in trade. It take little effort to them and it is one of the many ways to get their name out over and over and keep the raid fully stocked on alts/subs and all the things you need to keep on raiding. Now the top guild on either server doesn't do it as much, but as far as I know the froze recruiting last week. If /trade is helpful for 4 and 5/7 mythic guilds it is safe to say the average guild can find some benefit from it too.
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Why is that ridiculus. Acting like a toxic ass is a pretty damn valid reason to get tossed. As you stat gaming should be fun the OP is the one that broke that harmony.