I've noticed that every product I've bought in the past year with a zip-lock seal is destroyed with common use. I actually think the zip-lock itself has gotten stronger. The bag rips before the seal opens on half the bags now and whenever I try to opens bags I had no issues with before, I find myself stretching/warping the plastic before the seal eventually opens.
It's pretty frustrating and I am seeing it across many products. Cheese bags, storage bags, snacks etc...
Yes. I have a mix of those and the target / smart & final bags. The issue is appearing in all of them, and also in random foods that use that style of seal as well.
I have not experienced the problem that you are experiencing. But I'm still using bags that I bought last year since we buy in bulk at Costco. Perhaps they cheapened the build quality in the last year.
This question seems to be about things packaged in bags you buy not bags you buy to package your own things.
I noticed the bags my underware came in were bad quality over a decade ago. I didn't care then as I don't know why I want my underware in a stay fresh bag. Those cheap bags are coming to places I care though.