Sure, I'm just saying, everyone has their "pet" issue. If it's not chemicals in mattresses, it's chemicals in baby bottles (some now banned of course), microbeads, cheap car seats, running the washing machine/dishwasher when you're out, genetically modified food and other artificial food ingredients, non-organic meat, non rinsed washing up liquid, microwaves, non stick pans, ingredients in sun cream, mobile phone radiation, sleeping after eating, passive smoking, mouthwash, and a whole host of other things I've forgotten, if I allow these things to take up brain space then they seriously drive me insane and put me in a state of doing absolutely nothing because I'm worried that every choice is wrong, especially as (when it comes to products) it often seems like the "safe" alternatives are expensive, difficult to find, and involve lots of research. It's also not always clear what is a genuine worry and what is people trying to make money off their specialised product. Often you just need to solve the immediate problem (place to sleep, food to eat, safe container for baby in car) and you don't have the time, money or resources to make it into a huge project to find out what is best.
It seems to me that these ingredients are present in baby cot mattresses too and I wouldn't have had the money to shell out on a fancy organic one so it would have been the same issue either way. And surely if they are in mattresses they are in everything - sofas and carpets and car seats and I definitely do not have the money to replace everything and I'd rather not feel anxious and worried about something I can't control so I need to just put it out of my mind.
You asked me why I wasn't worried about it
that's all. I do agree these things are a concern and I'm glad that scientists and people are researching it, it's just that it's a lot for laypeople to worry about when you take every unclear health worry into account.