like Kizaru or Kuma could easily tell Luffy about Ace's execution for bait
I don't find that very likely considering how it came to be common knowledge throughout the world thanks to the newspaper.
Luffy may this time actually goto ID cuz of this to save his bro.
Nor do I think this goes in line with Luffy's personal philosophy. He already had that situation and still decided not to go.
If Oda wanted to have that information affect Luffy's decision I'm sure he would have done something else then have everyone (but Luffy) read about it in the paper first.And he wouldn't have had that vivrecard burning scene with Luffy. Perhaps whitebeard could have had it instead or something.
Technically they could but it would be something more appropriate/likely to happen in a fan fiction then in the actuall canon material imo.