Hello,
I am the one who has "invited" most of you to post a thread on forum, so i also want to answer you, even if Qeight almost said everything.
As Qeight said, these new rules were decided by different teams : Moderator, Trade-Moderator and Community Coordinator. We all noticed the Battle chat was almost inactive, only used by some PVP Players to say "gg", this chat had to be modify. In another side, players used a lot the Help and All chat to discuss about move-sets, abilities, natures, IVs, EVs, etc. These themes are used for battle (story and PVP) with your PKM, it was more logic to add it to Battle chat. Also, it cleans the chat Help from theses themes. For the Rates, it was never allowed on Help chat. Since all the point of the Rates is to discuss about the PKM Build (abilities, natures, IVs, EVs), it was more coherent to remove Rates from All chat. The objective is to have specific conversations in specific chats.
Again, as Qeight said, we hear what you have to say here and we take it into account. But as now, we think theses new rules are good in long term, so theses rules stay. And we will see in few months if it's a fail or not. The Staff Team are players before being Staff, most of us have many hours on this game (maybe too much for some), we decided theses rules because we think it's the best for the community, we are a part of the community and it affects us too.
You might notice a lot of warnings theses last days, more than usual, so you might think theses rules create it and should be removed because of it. There are more warnings, because more players make infractions in the chats since they don't know clearly theses new rules. For the others rules, the number of infractions stay important, but not more than before. We are also aware that many players didn't see the changes in rules, it's why we are more tolerant on theses new rules (not for the others rules). Just to give you my own number (not exact), i have warned more than 150 players for Rates/Builds in wrong chats during the last week, only 4 of them got a mute for it (after multiples warnings). All the others mutes are for breaking others rules of chats, rules that were already there (Help chat is only for story-related and General Questions. - Random and/or off-topic conversations are not allowed. You must use All Chat for those. - Do not discuss sanctions in any of the official chat channels. - Deplorable behaviour, profanity, spamming and posting inappropriate/ adult content are all against the rules. - etc.). I personally do a lot of warning, maybe a little more than others moderators, i want to be sure each player see the warning before being muted for an infraction (at least for minor infractions).
I hope i was able to answer to your questions, even if Qeight already said almost all.
Have a nice day and good game,
Epiales