There have been a number of technical arguments put forth on the mailing list, and the discussion is much wider than the few developers who work for Blockstream

There have been a number of technical arguments put forth on the mailing list, and the discussion is much wider than the few developers who work for Blockstream. It is easy to introduce bias when following development through secondary sources. The development mailing list is mostly non technical enough that interested Bitcoiners can follow along, which would perhaps facilitate a more nuanced understanding how protocol extension proposals are being developed.