In a world where there's no chance to obtain extraordinary power, talent is worthless shit. Even if they can't inherit his Strengthening bloodline they can still inherit his sun bloodline.
The sun bloodline is still enough for them to dominate the world where there will be no immortals. And if they cultivate using other methods such as immortal arts and martial arts.
The sun bloodline will still help them in the process. The sun bloodline can give them strength on par with the core formation realm at the peak of their life without the need of doing anything even in the world spiritual energy is exhausted.
After thinking about all of this, Wang Wei stopped thinking about his bloodline and looked at the water moon that now shined brightly because of the breakthrough of the Xie Shui.