My entire concern with CCP was the possible implementation of pay-to-win items. And, before that is dismissed out of hand, keep in mind CCP had already promised us that they would never implement such items.
Imagine, if you will, that you are the leader of a sovereign nation, and you sign a peace treaty with another nation. They vow never to attack or harm you, your citizens, or your military personnel. Then imagine a secret document is leaked with the other nation's secretary of state, secretary of war, and several other high-placed officials discussing the best way to assassinate you and invade your country.
This analogy explains why so many people felt that CCP's newsletter was a breach of trust. It's not just that CCP was discussing something we didn't want, it was that some were advocating doing something they had promised to never do. While it falls short of a dead body and a smoking gun in evidentiary terms, it is not illogical to consider it evidence of a possible intention on CCP's part to, basically, betray the player base.
We the player base are not, unlike law enforcement, required to wait for someone to actually do something we don't care for before we throw a "hissy fit" and bring out the handcuffs. We can make our viewpoints on the subject known, and loudly, if we so desire. Regrettably, some of us are more eloquent than others, but that doesn't mean the concerns themselves are without merit.