Each and every one of us have used, still use, owned or still owns a product made in a sweatshop somewhere in the world where human rights is laughed at.
So, I'll carry on buying from where ever I choose and you carry on your own way.
It's fine. We all do our bit to live our lives and be happy. And it's the same as digging on people for buying their cheap meat at a supermarket rather than the bijou butcher where you know the cows have been massaged and handfed buttercups and dasies before being gently despatched. We buy what we can afford.
However, we should be constantly questioning ourselves about what we are buying and what we need. So yes, i have a phone and a laptop and a car and i flew once this summer. I did carbon offsetting for my flight, and i drive as little as possible and get the best consumption i can. With tech and so on it's harder: so i try to recycle or buy refurbished tech where possible. Our old tech is donated or sent to the recycling places (I'm in Germany, it's pretty easy to track these things)
in a lot of respects demand drives supply (fashion is a weird one there with a weird structure) and if we demand better we will get better. And again, people will do what they can afford over their conscience every time. Generally.
People turning up their noses at 2nd hand clothes though is bonkers. A lot of the clothes still have the original swing tags, and lots of people are going to have to change their tune soon, unfortunately, i suspect, unfortunately.