The other huge problem is his plan. The writers and directors make fun of America's ass and time travel films and whatnot, yet there's no reflection from any of the characters on this utterly nonsensical bull****. Sorry for being that over-dramatic, but it kills otherwise great villain for me.
In IW filmmakers presented Thanos as an intelligent, thoughtful and even sensitive guy, who thinks about and meditates on things, who speaks so calmly and deliberately. They show how he mourns for those he has lost, to make him more humane; they show him explaining his motives, to make his actions feel thought-through and justified, but his goal is actually a complete bull****.
Such a congitive dissonance between the guy presented and the guy acting. And no, this is not "mad titan" Thanos, they can call him however they want, but this is not the mad titan from the comics, where his "kill half of all life" plan made perfect sense and did not feel out of character.
Here?
There's an incredibly vast ever-expanding universe, full of planets, stars, galaxies, galaxy groups and clusters.
Stones give one the power to change virtually anything.
Thanos wants to help people, wants life to thrive.
His thought-out plan is to kill half of all life to achieve that...
Human population in a hospitable environment with enough food can get back from a half of its amount to the full in somewhere between one or two generations. Some animals way faster, some not, aliens would probably be akin to humans.
So not only Thanos becomes a mass/genocidal murderer, who causes a huge amount of suffering because of killing someone's parents, partners and/or children, and let's skip the whole thing were he destroyes people with knowledge and experience in doing science and medical research, operating machinery, making tools and things, building houses, roads and hospitals, teaching, etc...
But! Thanos has done all of that so just in like 30 to 50 years, the population is back again where it was before the snap???!!!
And then he fricking destroys the stones so they can't be used again???!!!
Sorry, but what kind of an utterly idiotic plan is that? This is something he spends his whole life on, thinking about and executing that goal. An intelligent, thoughtful and sensitive guy.
From the universal point of view, with the cosmos being billions of years old, while he's destroyed two generations of people... he did basically and literally nothing to help anybody.
And then, he wants to use the stones to create a new universe. And then what? Kill half of all life again at some point? And again?
There's already a self-ever-expanding universe full of stuff and a gauntlet that can do anything. There's so many options to solve anything. And they chose probably the stupidest one ever. A universe-wide mass genocide that totally misses its goal.
Is there something I'm missing? This plan doesn't hold up whatsoever.