I'm using LaTeX 2e for 25+ years. This has literally never happened to me. If that's not stability, I don't know what is. LaTeX documents I wrote in my grad days still compile for me. I just checked and it does. I do keep the dependency packages myself in my folder.
Has this issue ever happened to anyone? Why would LaTeX distribution getting updated break my documents? It's still the same latex compiler and the same base styles and packages!