Like most political arguments, if you listen carefully; those who advocate for or against pardons, only want them to go one way.
A pardon is only a protection against a 'vengeful administration' if that administration is not your party.
Pardons are only a miscarriage of justice if those pardoned don't share your ideology.
I'm a leftist, and a Democrat by necessity (not by choice) and I would be fine if the power of pardon was removed for Presidents who share my ideology. I would rather have working separation of powers and reform the justice system than give one person carte blanche power to nullify it based on their whim.
Not everyone making a political argument is engaging in cynical tribalism. Believe it or not, some people do actually believe in things.
That’s what ypu tell yourself to feel better. But it’s not true.
My (leftist) opinion is that we don't give enough pardons. By the time people get out of prison, their lives are pretty much wrecked. We should have a lot more clemency and compassion. That's what the pardon is for.
If that means a ton of literal insurrectionists go free, that's fine with me. We elected someone precisely to do that. It's on the voters if we elected someone who was literally treasonous himself.
I hope the insurrectionists take the opportunity to get on with their lives. I gather that quite a few have already been banned for other crimes, and that's too bad.
I don't want prison to be vengeance. I want prison to make us all safer. I'd like the President to take a lot of leeway in finding people who are going to be productive citizens if they were given that gift.