People that make posts like this clearly don't understand what "normalizing" means. It doesn't mean being blindly accepting of everything that would be the exact opposite of "normalizing". It rather means we as a society decide, what "is regarded as normal" and what "isn't regarded as normal". In that sense sex is already normalized. The overwhelming majority of all people are straight, who also mostly engage in recreational and procreational sex. And this is what is also considered the "norm".

We don't have to go out of our way to find excuses to make specific kinks and fetishes out as "normal", because they will mostly never matter to the average persons life. And it's also widely accepted as normal, that if you want to get "kinky", you do it on your own time, not everybody else's.