I get your point but you need to understand that he still did it, in his subconscious he didn't care, he intentionally wanted to hurt Jin, just because he was drugged doesn't excuse the fact the he was hellbent on causing him pain even after he told him to stop, your subconscious mind reveals your darkest thoughts and desires
But your darkest desires don't define you and they don't count for shit if you actively try to be a good person and never let those out because you understand that they're wrong. Matthew is deeply traumatized from what he's been through in life, we know he's not mentally well. So yes, he's going to have a dark side, but your subconscious isn't something you can control and it certainly isn't something you should be judged by. What he truly wants is Jin's well-being and happiness, and he would never have let that darker side of him win had he been in control of himself.
A looooot of people judge on this site, especially when it comes to drugs. Reading webtoons like this and Shutline bring back a lot of painful memories. Sometimes, I feel like people don't take into consideration of people who have gone through what Matthew and Jin have gone through it seen family members or friends go through it. It's a rough situation, because you understand the anger and hate people have and the mean words they spew out....but you also understand the addict point of view too bc either you've seen it front roe or you've been through it yourself.
if i can give perspective here…
i was in Jin’s shoes a couple years ago with an ex of mine. we were at a party and my ex got roofied, and it really fucked him up; which in turn, caused me to become “collateral damage”, so to speak. it was intense, it was painful, both emotionally and physically. but i knew that if i didn’t help him, the drugs would fuck up his head even worse. maybe this is my savior complex speaking, but in the end, when he regained consciousness and was taken to the hospital, he apologized profusely for his actions and vowed to never go anywhere near alcohol again. we parted ways for different reasons, but we still are good friends and he’s an amazing person to me regardless of what happened. my ex never wanted to do any of that stuff to me, and i know he never would have, but was forced to because of the drugs fucking up his mind.
Matthew was mad at Jin, sure, for leaving him alone all those years, but that doesn’t mean he ever wanted to intentionally hurt Jin.

Screw all the people hating on Matthew and thinking he did all that willingly and knowingly wtf
Also to those having a gotcha moment where they're like see who's regretting it now?!?! He was literally high out of his mind and miserable
Not excusing rape at all, but even Jin understood that he'd never ever do that sober
I just want them to be happy T___T