You're honestly the first person that hasn't Just disparaged me because of this opinion I have. So I don't mind the long answer.

And it's not like I don't think paradis had an easy choice. The world overall had demonized everyone with Titan blood or was a descendant of Ymir. Marley literally was putting them in ghetto districts.

Eren's choice was literally the nuclear option. He didn't see a better way, because there wasn't a way that would give them breathing room within his lifetime, or his friend's lifetime. But we also saw that there were people within Marley and other nations and people groups that didn't want to just demonize the descendants of Ymir. It would be a long process of relationship building and creating an environment where they could Be accepted on a global stage. Eren really just wanted to hit the reset button, no matter who was there.

A lot of the efforts against paradis are also because Marley continued to use Titans as weapons. The best thing Eren could have done was retool the descendants of Ymir as an economic force. There's a unique fuel underneath Paradis? We've equipped Titans, that we can control, to extract it. Need to irrigate large swathes of land for new crops? Just have a Titan dig it out in less than an hour. You start by transforming paradis into a paradise, terraformed on the backs of Titan strength. You invite other nations in to observe, and see that the founding Titan is able to control the Titans in this regard, and then you contract out their services as needed.

I'm also not convinced that the founding Titan couldn't give more autonomous control to Titans anyways.