Just another reason to cherish those old tools, they literally don't make them like they used to.
One other thing to mention is that there are companies that make hand tools that outperform snap-on handily these days, even if they struggle against some aged tools. If you are interested in an empirical look at this sort of analysis, side by side, Project Farm on Youtube has covered most hand tools by major brands at this point.
Also worth noting that while the ceiling on quality has lowered, the floor for most major manufacturers seems to have raised as well. A random modern hand tool is usually more likely to break the thing you are working against than to break itself, and I can't even remember the last time I've seen a hammer lose its head, a screwdriver tip get stripped out by a steel screw, a wrench snap at the neck, etc.
One of the things about mechanics hand tools where this is a challenge is that mechanics regularly use tools for purposes outside the specifications, because you need to get the job done, regardless of what happens to currently be in your toolbox. In the past, because tools were overbuilt, this wasn't an issue. For modern tools, they are much tighter in tolerance to their specifications, both in good and bad ways. A simple way to tell is simply weigh the tools, due to techniques like CAD modeling with FEA, you can reduce the materials needed to achieve the same targeted strength specification. Tool from 1960 and Tool from 2022 with the same SKU likely have the same specifications, but are built in /very/ different ways.