Exactly, its not a "wake up moment" for her, she doesn't plan on starting a clean diet. She is pulling a classic ALR move to rake in views, start the cycle for all the "new subscribers", its all about the coin.
Just review her comments section and you'll see why Chantal does this. She is getting ass-pats galore from her supportive fan base and that's gotta be a strong hit of dopamine.
And that's how Chantal's mentality works. Notice she has to plan her lifestyle change. She either will start buying new workout clothes or gadgets or in this instance, go all-in on a fast food bender as her last meal of sorts. She's not doing this to actually better herself. She is doing it to get the rush of the change without ever putting in the effort needed to get the results. For her, the high is in the planning - not the actual work.
I bet Chantal was giddy as fuck as she initially planned out her bender. She certainly got excited over the thought of gorging and, in some ways, these types of meals elicit an even stronger high because there's no actual guilt associated with the bender since, in her warped mind, tomorrow will be that new day she finally figures this out and begins losing the weight.
These moments are truly the only moments Chantal can stuff her face and fully feel zero remorse for it because it's built out of the pretense of being her last hurrah.
But it never is because Chantal never has any actual hope of changing. Every diet or journey begins with Chantal either wanting to lose weight for some superficial reason, like going to the Dominican Republic with friends, or because she crashes so hard after a string of shit eating that she actually has a rare moment of lucidity. Except you see it in this video, and it's already pointed out in the comments above, Chantal's mindset isn't stuck on being healthier and excited about being healthy and maybe prolonging her life, it's stuck on being deprived of her fast food. Well that mindset is setting her up to fail spectacularly because she's more committed to hating the fact she's giving up all that shit she loves than she actually is about getting healthier and thinner. So, her mindset will always be on what she can't have rather than what she is working for and that will lead to inevitable failure because she'll eventually give in and gorge on the food she has spent every waking moment thinking about.
Chantal is only going to change when she is truly pushed to the point where eating the shit she does repulses her. But as long as she treats food like a fucking love interest, she's never going to be able to change.
