Applying for PhD with a 3.2 GPA - Do I even stand a chance?
It depends. Different schools, programs, and faculty have different ways of looking at applicants. Based on my limited experience, a 3.30 GPA from an R1 will likely count for more than a 3.30 from a less reputable institution. However, if you are applying to top-tier programs, you may be competing with students who have higher GPAs, also from R1s.

The reddit link that you posted is from one single professor at one institution. Without knowing the specific institution, program, and/or faculty member you are applying to, it is impossible to say what will be weighed, as there are not standardized admission formulas.

Some faculty are looking for students who match their research agenda and have research experience (i.e., they are proficient enough at research so they won't suck the faculty member's time). Others may prioritize GPA, and some might place more emphasis on quantitative GRE scores.

The link that you posted and the link from @henning both have good advice for tailoring applications to fit the department, institution, or faculty member.

If you are uncertain about applying, it might not hurt to contact a faculty member you are interested in working with to ask if they would consider your application. Even better, you could find a common contact/reference (maybe your undergrad advisor/professor/? knows someone in the Ph.D. department you want to apply to?) who can introduce you.

You might also want to check out college/graduate school/institution GPA policies to see what the minimum GPA for doctoral study is at your prospective institutions. If you have to maintain a 3.0 as a doc student, some faculty may question your ability to succeed at a more rigorous level.

To summarize: Ask the faculty member you are interested in working with what they consider when selecting doctoral applicants.