It is absolutely a reasonable interpretation to assume you were referring to the people making the decision you didn't like. And even if it wasn't, calling an idea a group of people have "incredibly fucking stupid" isn't much different, as it carries an implication of how you see those people.
If you feel other people are getting offended too easily at what you say, I recommend spending extra time on your posts to ensure you avoid saying derogatory things you don't intend for. Something that looks good to you can be incredibly insulting to others who read differently from you, and since conversation is a two-way street, that's the kind of thing we all need to be aware of.