Money has always been gamified. It's not so much about purchasing power, but about status - and in the big leagues, it's about political leverage.
VCs are really playing a status game, and the promise is that you too can become a high status player with a public profile and significant economic leverage. It's a completely traditional patronage relationship, based on the promise that if you win a round of the game, they will help you level up.
Ideally you both exit with a unicorn level IPO. That's a real win - for you, but also for them.
So this is not primarily about being able to afford to pay the bills. Or even about "changing the world" by providing a new kind of service. It's more like an economic and political sport.
A win leaves you with plenty of cash, but it also gets you entry to The Network, and eventually you may even graduate to coach yourself.
This is why VCs aren't interested in growing stable, unexciting, but productive businesses. Those are low-status beta plays, and no one ever became a thought leader by funding a small beer Wordpress consultancy - not even one that has been around for more than a decade, is comfortably profitable, and the business owners can afford to retire at 40.
The real stakes aren't money - although that's certainly a factor - but Network profile and reputation.
As a bootstrapper you can choose to play this game, or you can choose to ignore it. And ignoring it is perfectly legitimate. There's a huge amount of stress involved in going full SV, failure is far more likely than success, success is far more likely if you're already in or around The Network, and not everyone cares enough about the benefits to consider it a worthwhile tradeoff.
Anyone who does choose to play it should be aware of what they're getting into, and stories like OP's can do a lot to make the tradeoffs clearer.