I was not aware of niche, kink, alternative etc sexual practices until an adult .. and that was an appropriate time (and level.if maturity) to process them and put them in context.
Exactly. Learning about sex should be a slow process. My DS is 10 and pretty much now knows what sex is, but even that was a very slow process starting from about the age of 4 or 5, with him learning that babies grow in mums tummies, then that there is an egg, then that that egg needs to meet a sperm to make a baby, then that the sperm go in through the woman's vagina and finally that a penis goes into the vagina to deposit the sperm!
Once kids know about sex, they then learn that humans do it for fun and that as well as penis in vagina, humans also like to do other things. Then kids start to hear and learn about these other things, the names of them, what they involve, as they also start experiencing stuff themselves as well and deciding what they like.
To pile absolutely everything onto 13 year old children, to tell them every fucking kink and fetish all at once, for them to learn about it from their teachers and so it be legitimised in that way. They are not equipped to process it. Contrary to what some on Twitter would have you believe, not every 13 or 14 year old is shagging behind the bikesheds with multiple partners. Some of them might not have even snogged someone yet, and there is fucking nothing wrong with that. I remember being about 14 and my friend telling me about how a boy had fingered her and I was quite shocked and so not ready for that. When some of my friends started having sex at 15/16 I knew I wasn't ready for that. Fuck knows what I would have felt being told by my teacher that 'sunflowering' is totally normal.
And I know easy access to porn is an issue that didn't exist to the same extent before, but just because children might be being exposed to niche, potentially damaging sex acts via their phones is not a reason to be teaching them 'yeah this is totally normal'. Most of the sex in porn is not normal and kids who are just starting out in sex need to be told that in no uncertain terms. Otherwise boys expect to be fisting girls in the anus, and girls will think that is what is expected of them in any encounter. What does it matter really if its 'Kink shaming'? Why do 13 year old kids need to be accepting everyone's kinks?