No one is arguing that the President does not have the power to pardon. However, like any right, he can misuse that power and get himself into a whole lot of trouble. He can well pardon his way into obstruction of justice and abuse of power charges, a la Nixon. No man is above the law; no power is unlimited
One of the limitations on the Presidential pardon is the act of pardoning himself. Some have argued he can; many have argued he can not. The mere notion that this is unclear means that the right has limits.... he tries it, he will find out the courts will decide. That uncertainty alone means its not unlimited. The fact that it also could be political suicide means its not unlimited. Moreover, his pardoning witnesses actually acts to take away the witnesses right to plead the 5th, meaning they would have to provide full and complete testimony as they would be not be relieved of A) state charges and B) charges of perjury.
No, all rights have limits.
While you could make a perverse political claim that it was, it would not get very far.
The executive branch of government, including the POTUS, typically have broad discretion to prioritize law enforcement resources to enforce laws. Not every city hall enforces its vagrancy or zoning laws (two males living in the same house hold is still illegal in many places) or governors enforcing moral laws (fellatio remains illegal in many states or marijuana criminal in others). The federal government is also selective in enforcing drug laws...and they have been institutional in handicapping the IRS for enforcing its laws. No, no body is going to make allegations that failure to enforce laws is obstruction of justice.
Just for fun, here are some absurd laws still on the books....
https://www.legalzoom.com/articles/top-craziest-laws-still-on-the-books
no one is going to make the point that a failure to enforce the laws to their fullest is obstruction of justice.
Obstruction of justice is usually about thwarting or frustrating an on-going investigation, particular criminal. OoJ is particularly egregious when you are the subject of that investigation, as is Trump and much of his senior campaign staff and family members.
https://www.law.cornell.edu/wex/obstruction_of_justice
So, nice try attempting to deflect with a whataboutism, but like most whataboutisms, this one isn't even remotely comparable; and like all whataboutisms, it serves as an admission that you lack a direct defense for the proposition at hand. We all appreciate your admission.