Except there is no supporting evidence as you have not been put in that situation. It's just an assumption with no facts to back it up apart from gut feeling.
The example is irrelevant is it bears no resemblance of what is being said.
There is plenty of supporting evidence - all the games I've played since I got my first ZX-81. I know which activities I enjoy, and which I dont and can extrapolate from that knowledge my most likely response to having had to use the FSS from day one.
My favorite aspect of ED is the Stellar Forge and the scale of the galaxy and the systems which it contains. I immerse myself in this scale by flying around systems, even (especially) those where objects are hundreds of kLs from the drop-in point. The ADS required me to experience that scale and since I enjoyed my first long distance trip so much, I became an explorer.
The FSS doesn't require me to experience that sense of scale - in fact it was explicitly designed so that I DON'T experience it. So what is there to immerse me in the gameplay? Uncovering the system is good, but without the scale every system becomes the same - a bunch of blobs to be clicked upon, regardless of how they are arranged. That doesn't float my boat, even though for other people it's the absolute schizzle. So using the FSS, my first trip out to NGC 7822 (
drinks) would have been a grind, rather than a thrill.
Now I'm sure you're going to point out that I can still fly around the system mapping thinge, and you'd be right. However, the mapping minigame manages to be even more puerile than the scanning minigame. The mechanics are beyond simplistic and the results are nothiing but cookie-cutter volcanic and biological sites. I'm not a "Gotta catch them all" kind of gamer (evidence in my Steam achievements) so completing the Codex is insufficient motivation for me to continue mapping after the first half dozen bodies. Also, since the majority of mappable bodies aren't even landable, there's no reason to map unless you actually enjoy mapping - which I don't.
So, the lack of immersion in the galaxy, the puerile mechanics and the pointlessness of the activities allows me to confidently state that had I only been exposed to the FSS, I would not have become an explorer.