Well that's what you hear, however that is not all there is to it.
35" scale allows you to use a lower set-up, you have far less string excursion and unless the player is club fisted you can use under 0.02 (twenty thousandths) nut depth (between the "B" string and the first fret) and even smaller amounts for the other strings. Besides excellent playability this helps with intonation also because the further you push the string to the fret the sharper pitched it is.
Then there is right hand technique and for me it's better because not only is the "B" string tighter, they are all tighter.
Down side; fewer options for strings (minor) and increased string tension (maybe an issue for some?).
Increased length, 1/2" on either side of the 12th fret.
34" is the scale for a four string and some manufactures just add a fifth string and then some make them a 35" which is what a "B" string really needs. (not just for sound)
If you have a 34" scale that works for you that's great and I'm glad for you.
No need to discuss which one sounds better, I've heard some good 34"'s, there is much more to it... Peace!
OK.....lower string height because of 35"??

Umm...no.
I have 34" scale basses that a butterfly could land on a string and fret a note. Scale length plays no difference in setup.
String excersion will actually be equal or more with 35". Oscillation is oscillation. A less than 1% chance in length is not going to contribute as much as you think. I could alter it more with string gauge thn with scale length.
Right hand for YOU make a difference. But again, change string type and that issue again is changed far more than scale length.
I Ernie Ball Slinkies for example. Hated them. They "felt" as if the had far les tension than the D'Addario's I normally use.
They didn't last a day on my bass they felt so "loose".
Most people don't realize that Leo Fender picked what felt good- 34" as opposed to what was optimal for a bass.
If you believe that 35" makes a significiant difference and impact, then I suggest you try yourself a Dingwall. And when you do, I suggest you bring a towel. They have insane sounding B strings.
My Smiths', Fodera's, Sadowsky's and others were all 34" scale. All could be set with action so low that I'd bet most here couldn't play them.
And all are reknowed for having some of the flatout best B string in the business. Hell, my G&L L5500 has a nutty a$$ awesome sounding B string.
Does 35" scale help? I'm sure it does. But it's not just that number that makes the difference.
Everything you mentioned can be negated on a 35" scale bass or replicated on a 34" scale bass by simple setup and or string change.