I never said that every character needs to be meaningful.
Here is picklecannon's post again:
And there's simply no reason for any of this to happen.
Luffy vs. Bellamy in the final fight (LOL):
Why on earth would Luffy give up on his brother's devil fruit (the reason he's participating) and put Bellamy's dream (lol) over it?
Burgress killing Bellamy, Luffy gets mad:
Again, there's no indication that Luffy cared at all about Bellamy.
Bellamy getting a flashback:
Total waste of time, but probably likely, since he's linked to Skypiea now.