In the case of PPP loans, they specifically outlined a forgiveness program, which clearly affects the decision to accept PPP loans in the first place. Taking a loan with the stipulation that it might be forgiven is not the same as taking one with no such provision. The issue I've got with comparing PPP to student loan forgiveness argument is that the former actually had a legally defined path for forgiveness included with the passage of the bill that funded it.
Labeling PPP as "loans" was an obvious misnomer. They were grants/bailouts and always intended to be forgiven, and it was clearly outlined as such when people took the money. I don't view it as an apples to apples comparison when throwing around charges of hypocrisy.
I absolutely hate what has become of student loans. I don't entirely agree with forgiveness for various reasons, however I wanted it to pass because I know multiple close friends who it would have made a major difference in their quality of life.