Yes, but how is the hospital supposed to determine the committed relationship in the case one of the partners is comatose? Upon what proof do they rely. This is easily solved by a written POA executed by the parties involved..
That's exactly what this does. Unmarried couples, either gay or straight, can now specify in writing who can visit them in the hospital. There's nothing about this that says hospitals have to allow visitation rights to someone just claiming to be someone's partner.