There cannot be a mass workers' party if the mass of workers do not want a party, and it's unreasonable to expect such an organization to simply appear and get everyone in line instantly as soon as revolutionary sentiment emerges. This is an unproductive expenditure of energy compared to organized action by a vanguard party, yes, but framing it as a failing of the movement as a whole is unhelpful. This isn't a sign of the "absolute decay of the movement", it's a sign that people are beginning to recognize that the change they want will not be achieved under the current system.