Yes, survivorship bias is real, but it's absolutely true that clothes are often made of more delicate fabrics today.
Some of it is fashion-motivated; a shaved leather jacket that has a feel almost like cloth lays very differently on a person than a bomber- or motorcycle-weight jacket.
The rest is because lighter threads are cheaper. And lighter-weight zippers are cheaper.
We won't know if this self-lauded new product is an improvement or not for a while.
The comment means "you throw away the shirts with holes, so obviously any shirt you have from 2010 has no holes". Unless every single new shirt the GP has has holes in it (which they don't), we can't draw any conclusions from this, except "some shirts from any year last a long time and some don't".
https://upload.wikimedia.org/wikipedia/commons/b/b2/Survivor...