The way I see it: Bottom line regardless if you like Deryl or not, you have accept the fact that Deryl was a cunt when he was younger.
Saying it was all in the past doesn't mean it didn't happen. The fact that I can kill Demi for practically no reason but I can't even have my MC be incredibly mad at the guy who nearly killed me not once, not twice, but THREE God damn times makes him justifiably unlikeable as a character.
-Original Deryl before the powers was fine, he was a bro.
-Mind fucked Deryl was a cunt by NATURE, he actually went AGAINST Ella's orders to go and murder us.
-Post Mind Fucked Deryl kept burning us alive and pushing us on the brink of death despite already breaking the mind control, and actively says he probably would've fought you regardless. No apology, no nothing.
-Clone Deryl was a homie, nough said.
-Del is a cunt, plain and simple. Some may argue he just wanted to live, but he did it at the cost of our relationships, freedom, etc. and he was NOT apologetic about it in the slightest.
-Monster Deryl is a grey area, Deryl says he "wasn't in his right mind" but still has the mind to prank scare Cole and get along with Charlie on an emotional level. He says he was convinced we were out to get him and that's why he designed a bunch of monsters to kill us. This section is honestly up to however you want to view it as there are a lot of moving parts. Personally, his track record leads me to be in the negative view of the spectrum.
-Combined Evolved Deryl is probably the worst of them all. Whining about he was SOOO close to getting his Rebis, except fails to fucking account for almost murdering all his friends that came to save him. Then you also have to realize that all his little cunt forms are in there as well. The ratio is looking REAL fucking weak for the homie side in comparison to the amount of ASSHOLE is in him.
If I can kill Bailey for biting me, Demi for saying she knows my identity, and Clover for failing to punch me; you'd best BELIEVE some people want to kill Deryl for burning us alive, taking away our freedom, bullying us when we were younger, and being an asshole. Not allowing us to even DISLIKE him in the next week grind is what gets me. You say a few harsh words at the end of the fight but, that's it, all is forgiven, just bros being bros, and to me, I feel like that view isn't far off from Deryl's perspective. He didn't really seem to care at all about the events save for if Laurie dies. Instead feeling only disappointed he didn't get to finish his goal.