Quite the contrary. D&D was originally a supplement for Chainmail, a skirmish wargame, in which they started adding characterization elements. Many/most of the early RPGs were very crunchy, and a lot of people played them focused on combat and stats. But it had started by adding story elements to a wargame, and over the years it continued adding more.

In the middle era, the trend was obvious with games like Vampire: The Masquerade and its Storyteller system, coupled with the LARPing fad and some diceless games.

Since that era, the trend has continued. Many games now have little or no crunch at all, and focus almost entirely on world-building, storytelling, and improv. Some games, like the mentioned Microscope, along with Ex Novo and The Quiet Year are almost entirely crunchless world-building and storytelling.

You can go quite far with just oracles and no system at all, and then if you need one, easily pull in something modern and light like FATE, Mythic, or Fu RPG that just adds a few die rolls to your otherwise creative campaign.

And it can be more soloable than crunchy games because you don't need tons of rules and stats and dice rolls. You instead have creative prompts and oracles and source material and can just go with it, reading, interpreting, writing wherever your imagination takes you.

I did also do a lot of solo wargaming, so crunch is not un-soloable, but less crunch is easier and can feel more rewarding.