Incorrect, what did for the Hindenburg was the blockade of Helium on Germany, plain & simple which forced her builders to use highly volatile hydrogen as a substitute with disastrous consequences.
Had she had bouncy from Helium the disaster wouldn’t have occurred, aircraft would have eventually taken the lead of course, but the fact she died in a hydrogen fuelled inferno that was - unlike the R101 for example - captured on film for the masses at large to see in all its horror - it would have been a non event and the airship would have served on for a considerable time thereafter.
This.
Also, Zeppelin are still going and still making ridged Airship's, the Goodyear Blimp for example,
Incorrect name, its not a Blimp, a Blimp is not ridged, its an elongated balloon, the Goodyear Blimp is a ridged Airship, and built by Zeppelin, and there are others.
Zeppelin are looking at bringing back the glory days of large luxury travel in the form of large Airships, as are others.
Of course winged flight was superseding Airship travel but not necessarily in the same market, the argument that you can get from A to B much faster in a plane is of course a valid one, but not entirely relevant, its a different market, Planes are convenient, they are simply a means to get from A to B, we still travel on Ocean Liners, its a luxury excursion, Airships offer that too only on a higher level, that's the point of them.