I suspended the bot because of the greeting, and only because of that, which is also what I told you in my chat message.
Root Access is the general chat room for users of Super User, and any new user coming in being curious about the chat will have that bot greeting them. That is a functionality that the Stack Exchange chat system specifically and intentionally does not offer, and a user-written bot shouldn't either.
Given that the user who is in control of the bot – you – wasn't available in the room at that time, I disabled the bot by "suspending" the user you created for it and left you a message, in particular telling you
I have suspended the bot for now, let me (or another moderator) know when the greeting is off.
I put the word "suspending" in quotes because it's not like I put a real user into the penalty bin – I just disabled a bot.
As to the question of why it's allowed in other rooms – it's not. I just wasn't aware there were more. Tim, one of our community managers, will check out the other rooms you mention and enforce the same thing there.
If a room is specifically created for a bot, or the room's purpose is very specific to a well-defined group of people who consider the bot fitting and its greeting appropriate, we don't have any issues with it.
But in this case we're talking about a general for-everybody chat room, the first point of contact of new users with the chat, and in such a room, we have to ask bots to tread lightly.
As to the /fuckable
command, I merely asked you to reconsider. Personally, I find it extremely immature an inappropriate, but I haven't made up my mind about outright disallowing it, and if you do reconsider and remove it, we wouldn't have to make a decision about that. If you don't, then we'd have to talk about it and decide. From your point 2.2 it looks like this won't be necessary in this case, but if you say the same bot runs in other rooms, there may be other cases.
Finally for completeness and reference, our general stand on chat bots is stated in this answer of minethis answer of mine.