Oh, my answers to the questions asked:
1) Are synths of a certain type/caliber/complexity/ability reserved for certain types of users/uses?
Yes? Some people like some things more than others, some people have more use for some things. That doesn't mean one thing is better than another though.
2) Do you consider this when looking at future purchases?
Well I guess, I am generally only going to buy a synth that I want to use.
3) Do you check the alignment of a particular product in relation to your chosen genre(s)?
You don't want to get me started on genres again.
But apart from that, there are certain sounds that I like and so I am not gonna buy a synth that can't make any sounds I like. But I've found no matter what the synth is that I use it always comes out sounding like me, provided I'm able to program it.
4a) How important are live-song-making product demos as selling points?
I like seeing what the workflow of a synth is, particularly if it's something with a sequencer or other things where how you use it is more than just turning knobs. But something that's just a keyboard or a sound module I don't see what the point is really.
4b) Compared to sound-cloud links or a patch by patch roll through?
I find those going through the presets demos incredibly boring. I'd much rather watch 10 videos where people have used the synth in a song just to find one I like than see someone rolling through presets.
5) Does the preset amount (high or low or no patch memory) influence your purchase?
No, I make patches from scratch whenever I'm using a synth.
6) Does who else uses it matter? Like if it's already popular for your intended genre?