As someone who lived through the “golden age of television” you have to remember the shows were a product of the times.
Television was “new” in the 1950s and many shows were live and they had longer seasons. Not everything was great, but it was new, and it was in the home, and it was “free”
Did all the old shows hold up over time, no, but many have, you only need to look for them.
I collect another example of the "it was new" phenomenon. That would be Mom and Dads records. They suck, but I collect them as an ephemeral example of the very concept.
,p. They were a Canadian band that, for some reason was fairly popular in the northern midwestern US. A sax, a "boom-chicka" drummer and a tin-pan piano played with gusto. And people actually bought this stuff. :)