It's bizarre to me, an Australian, how the pardon power is used in the US. Our federal, state and territory executive governments all have a pardon power, inherited from English law, that is, formally, unlimited (like the US federally and indeed it's less restrictive than many US states for state crimes).
It is a power used very sparingly, even though legally it is unlimited - the state of New South Wales is, as far as I know, the only one which publishes details about uses of the pardon power; in an average year there are 0 successful pardon/commutation applicants, and it's an exceptionally merciful year if they grant 2 or more. Other states and the federal government may or may not be a bit more generous, but we're talking very small numbers. Most pardons are for reasons of unsafe convictions where for whatever reason no remaining avenues of appeal are available (rare, these days, because each state has introduced laws to enable post-conviction reviews).
Historically, particularly in the 19th century convict era, the pardon power was much more important, and was indeed abused for political reasons on a number of occasions, but it seems that for the most part it quietly exists in the background and only gets significant public attention once every blue moon for a high-profile murder case or similar.
What explains the difference? Is it the requirement for sign-off by the King's viceroys that prevents abuse? Collective Cabinet governance that is accountable to Parliament? Maybe our political culture means politicians' friends tend to end up in prison less often and thus there's less opportunity for the abuse of pardons specifically? It's not particularly clear to me - if anyone's got some good comparative studies send me links!
As an Australian? Dude, your country is the most authoritarian of the current English speaking "western" countries.
The parliamentary countries like Australia just have made it so that they forever encroach in civil liberties and hide it all in bureocracy and pretend things work as intended and that democracy is working but when it was covid time they utterly crashed dissent. Same with most cases of effective opposition to power. The first in line to try and control the internet, speech and more from its citizens who don't even notice it that much because it's so ingrained in the culture of self censorship.
Having said that, yes, the pardon powers are ridiculous and they're being used more and more in ridiculous ways like this one from trump or the "pardon for everything just in case, for future and past" from Biden.