Fender had to choose a scale length. He could have decided on anything, but chose 34" for multiple reasons, one of which was for better intonation all the way up the neck. He later improved intonation by adding individual saddles to the bridge.
This is something Gibson totally overlooked with their little bass guitars in 1953, almost as if proper intonation was irrelevent.
And it probably
was irrelevent to their target customers....guitar players who got relegated to the dubious role of "bass player" in their band. (how humiliating!)
The whole notion that 34" scale basses are somehow "more difficult" to play is spurious. 34" is the accepted full scale length for a reason, not luck, not marketing hype. It just works well for most
bassists.
It is also wrong to assume that full scale bass players are somehow ignorant of the alleged "advantages" of little basses. It's usually the other way around...owned some, played many, not seeing any advantage, prefer full scale.
There's nothing wrong with shorty basses or the players who prefer them. But trying to make a case that they are somehow "better"? Peel an onion, eh?