I don’t remember any of their prior movies needing to push agendas for anything in particular.
Then you aren’t paying attention.
Gender-normative, male dominant relationships were the agenda. Since then, we’ve had an era of strong and independant - or at least stronger and more independant - female characters. Now we’re entering an era of deconstructing heteronormativity.
Things have been one way for so long that you perceive it as normal, and anything else as a divergenance meant to push an agenda. Every piece of media you’ve ever consumed has had an agenda and actively, consciously played to the stereotypes that would bring in the greatest viewership and reinforce the most commonly held stereotypes and opinions. This is no different; you just got used to one agenda in particular.