Don't forget that HRC and Obama both felt strongly (based on their faith) that marriage was between a man and a woman until popular opinion was quite a bit more progressive and there was no longer any political cost to being supportive of LGBTQ rights.

While politicians like to pretend that they are a source of progressive energy, any member of a major party will typically lag by at least several years on any important issue... until it's "safe" or "mainstream" enough not to threaten the status quo too much.

I simply do not believe that HRC and Obama suddenly realized that LGBTQ rights mattered, they are self-serving self-promoters who calculatingly switched their opinions only when it was advantageous to do so. Such horrible, unprincipled people do not deserve our support!