He's very clearly a villain in Infinity war and Endgame, not "just misguided." Lots of villains have had lofty reasons for the terrible things they do.
If they had the idea for his motivations in mind the whole time he would have been written completely differently in his earlier appearances.
"Courting death" is only inconsistent if you take it as a double meaning based on the comics.
Nah, I've never read a comic book with Thanos in it and I honestly don't know anything about that beyond what I've heard in passing over the years. The "courting death" line is a completely different tone than what he ended up being and acting like. It's weird to me that people try to pretend otherwise.
As for loving the daughter he abused…yeah, that's a thing that happens. Also most of the actual abuse we see involves Nebula, who he clearly does not love nor claims to.
Gamora is absolutely an abuse victim and I think it's really fucked up to refer to refer to what happened to Nebula as "actual abuse" in comparison. GotG2 especially is very much about abuse and the impact it has on it's victims/survivors and I think it's very gross to then play into the "actually Thanos is a soft man inside that loves his daughter", it REALLY bothers me how this is played in Infinity War and I'll leave it at that.
Already got into enough arguments on this forum today about movies I think are average to mediocre at best though so I hope you'll understand if I bow out.
I think Thanos is really inconsistent in the MCU and he could have been written more consistently if they had planned something out from that start. That's my only take. If you disagree, that's also fine.