Does HR 3200 Subsidize Union Retiree Medical Benefits

In reading HR 3200 (little by little), I’m trying to understand the point of Section 164, “Reinsurance Program for Retirees”.  This appears to provide a free reinsurance program to subsidize retiree medical benefits.  Given that the only retiree medical benefits out there are driven by collective bargaining agreements is this really a government subsidy of union retiree medical benefits — thereby insuring that union members get access to superior medical benefits at government expense?