Primeng, dynamically uncheck p-checkbox with pButton

i originally found this question, which is really similar to my situation:

how to uncheck/check a primeng checkbox manually

and this is a StackBlitz where it shows my problem:

https://stackblitz.com/edit/angular-primeng-p-checkbox-issue-6xjv8b?file=app/app.component.ts

basically, i am looping through data that can be any length and displaying it in a table.

one of the columns just has a p-checkbox with (onChange), that when checked and unchecked, it passes in some parameters for me to keep track of in an array.

i am trying to then uncheck all the p-checkboxes with a button click.

i found another question/solution that mentioned using @ViewChildren, ElementRef, QueryList but it was having a problem trying to figure out what "nativeElement.checked" was.

and other questions/solutions i found involved knowing the length of the checkboxes beforehand, and using *ngFor through an array to display the correct amount of checkboxes. i tried to use similar logic with my setup, but couldn't get it working either.