I think they’re generally harder anyway. I have a gadget for ring pulls and bottle tops and hit the edge of jars in something to bend them which breaks the seal. I’m reasonably healthy and don’t have arthritis. Ridiculous isn’t it. One roll on deodorant I buy was getting harder and harder to open. My husband couldn’t even open it with a vice and a load of tools! I wrote to the company and they apologised and sent me a box of them, all opening ok! They’ve always been ok since. Sometimes it’s worth speaking out and not assuming it’s just you.