I am kinda getting sick at redemption angles in media. Its become a super popular trope lately... everyone has gotta be redeemed. Everyone has gotta have a reason, like no, some people are just pieces of shit! :P
and a good redem,ption can be done well, but I have seen people be written to have done the worst things, and then writers be like 'hey let's redeem him'.
Let's be honest its not the first time Sabretooth has become a 'good guy' but he's always been manipulative in his reasoning, you know he cannot be trusted. My favourite of these moment is in the early 90's when he tried fooling the x-men into thinking he was 'good' then went on a killing spree