Because people want other options. No offense, but if you do not have the know how and ability to order international safely, don’t assume other people are in the same boat. There are tons of people who have been ordering products be it ancillaries, growth hormone or raws for decades now with no problems so far, myself included.
Obviously it is more risky, I am not delusional, that is why you have to weigh it if it is worth it. Plus, in this game nothing is safe, you just have to mitigate the risks in some ways.
But if you are happy with ordering from domestic labs, then just stick with them that is fine as well.