I don't see why they have to limit themselves so. What entitles you to be able to clear the fight with minimal gear without putting in the necessary teamwork with other human players? You are essentially saying that savage content should not allow my group to experience the joy we felt clearing this fight on day 1 after working together to maximize our damage during the adds phase.
If you want to be able to join any old party and clear without communication, just give it a few more weeks. The Gimme Cats and Jabberwocks melt when your party has any semblance of gear. But if you want to get clears now, either continue rolling the dice, or actually stick with good players you meet in PF and keep filling in slots til your party is good enough to clear.