Hi, I don't think people need to use ETO to distribute undesirable material. There are many handy popular social networking sites and email providers sites to share personal, undesirable, elligal materials.
At least I think. Maybe the site manager do not want members to talk technical thing secretly as conversation. Others member will not get chance to learn from the discussion so.
Early years, I used to post lots of threads day by day. Later I learnt soemthing and also I reconized some engineers personally too. So my thread posting rate has been decrease. Stopping the image post from conversation might increase my thread posting rate again.
OK do as your team's wish! But the new updated ETO is not supportive in some mobile browser as before. I tested with UC Browser in Java cell phone (I don't know how UC works in Android) and I cannot use ETO as it is. No post writing box, text are in very narrow coloumn etc. Operamini cellphone browser is quite supportive than UC but I cannnot upload multiple images in single post. I need to post another post to post another image. All these stories are based on cell phone browser. Probably the problems will not easily solved, maybe the new system is not compatible with Java cellphone browser.