It surely doesn't.

Source: it hasn't flown off into space yet

"gravity doesn't exist, we're pulled down because the earth sucks"

It feels like you're using the word reality as a duplicate of the phrase personal experience. In that case I would agree. You can absolutely choose how you feel about the things you perceive.

But no amount of choosing how you feel gets you to fly. And no amount of thinking you can fly will ever prove you to be right when you try and fail.

Though you can certainly feel like it's worth trying again if you're so choose.

If that sounds a little too woo-woo then how about a more practical and fun example.

Your nose takes up 10 to 15% of your vision.

The capital R reality is that photons are bouncing off of your nose and entering your eye. Your eyes are seeing your nose. And yet, unless pointed out most of the time you don't even notice that your vision is nose-less when, in fact, a nose is constantly in your field of vision.

Your mind has edited out the existence of your nose.

That's not woo, that's neurobiology. But so is the conscious construction of your reality. If you think about getting into a fight, your heart races, despite there being no real threat.

Now if a baseball suddenly hit you on the nose, you would be quite aware of capital R reality making it's presence known upon you. But how you perceive why that happened and what it means determines the rest of your reality.

It's not news. And arguably this is the type of thing where you benefit from seeing the actual person talking because they have personal experience of what they are talking about. It's more than just conveying words.

Glad you like it! He's from a related system (advaita/tantra) so if you know anything of Buddhism, he would sound familiar. He just has stripped away pretty much all of the cultural trappings and focuses purely on the core nondual philosophy and practice.

Also he's what's called a "householder", tantra being primarily a "householder" tradition. Meaning, no sitting alone on mountaintops, it's realization while engaged with the world.