It's just cheesy as all hell and an incredibly transparent way to put some wolverine on wolverine action into the movie.
You really thought the sequence where X-24 first shows up at the farmhouse is cheesy? I don't know what to say to that. Perhaps he isn't as effective in his second appearance at the end, but his first appearance was horrifying, especially in regards to Xavier's death.
That's like the antithesis of world building. Pass
I like the ambiguity. Logan guaranteed them a future, but he, nor we, will ever know what that future entails. It is uncertain but certainly there. That will have to be enough. The young inherit the earth, the old men die and pass the torch.
It also reminds me of classic westerns, noirs, and gritty crime films where the protagonist dies and that's all they wrote. Movies like Bonnie & Clyde, Get Carter, Out of the Past, and The Wild Bunch. There is nothing left to say.