They evolved to have nice sweet stuff to lure insects to take so they get their reproductive dust stuck all over them to impregnate other plants so technically arent the bees being sexually assaulted as part of some weird fetish
The open blooms are the consent. That's why flowering plants make flowers, it isn't so human females can skip alongside them and simper "teehee look at the pretty frowers".
Plants making flowers and blooming them open is like a female adult one of us having boobs and wearing a top showing lots of cleavage. Or something.