Presets are what sells synthesizers. That's been the case since the introduction of ROM-based presets, long before we had synths in pure software form.
Yamaha sold a boatload of DX7s, and you can always identify one in a recording because every hit record that ever used it used a factory preset. Few users ever figured out how to program the thing. I don't have any FM synths myself, but I'll bet every one of them has a preset named "Jump".
If I were the developer, I'd be upping the ante. The best patch programmers expect to make money doing it, and they're a small talent pool. Eric Persing founded a successful company after starting out as a patch designer. 30+ years later he's still selling the same patches he designed for Roland "hardware" synths, but as samples today. His flagship product is a great synth, but even many of its users don't know it. I'd be surprised if more than 1% of his user base actually programs Omnisphere beyond simple envelope tweaks.
My point is that having a great collection of presets is
far more important to a soft synth's success than having a great set of building blocks.