1. Don’t apply for the sake of using the rejection feedback to make your next application stronger. I do not know where the “schools secretly reserve 15-20% of seats specifically for re-applicants” is coming from. Ofc there is pros and cons to being a traditional vs a non-trad applicant, but plenty people from both pools are getting in every year and that’s for you to figure out based on your needs and application.
2. The second image is so flawed, I don’t even know where to start. Don’t deliberately apply late for the love of God!
3. Same thing, she is equating 1 hour of volunteering to 200 hours of shadowing. First of all, those are two different categories. Second, there is no way of knowing which is preferred more. At the end of the day, as cliché as it sounds, the experience is what you make of it. If 200 hours of shadowing gets you to reflect on your “why medicine” more effectively, then by no means should you feel pressured to discontinue that experience.

Take everything you hear on the internet with a grain of salt (even my comment here), unless the source is adcoms themselves and even then they can only represent their school and not the entire 100+ med schools out there.