He was just a Pioneer, lacking the power to interfere with an entire ecosystem. He could only continue to visit each intelligent species he could still find, to apologize to them and to ask for their forgiveness. Some species, upon hearing that the Giant hadn't abandoned them, were deeply touched, and their entire race regained its vitality, while others became even more enraged.
Long Yi accepted all of this, but he never suggested leaving this place to any of the species.
In the end, it was the Sword King who told Long Yi the truth.
The moment Long Yi's identity as the Giant was revealed, the Sword King had told every species. In fact, not a single species truly hated the Giant, it was more likely just disappointment followed by expectation. When the disappointment accumulated too much, it turned into hatred. But when Long Yi came, the hatred disappeared.
This feeling was like the relationship between children and their parents.