My best guess is that Strength-based warriors will probably turn to barbarian instead of fighter. On the other hand, I doubt that 1 point of AC will matter that much.
The best case scenario is that Strength-based fighters (or clerics, for that matter) won't dump Dexterity like they can do now.
Id do want to play a strength based fighter with a lowish dex with a noble background. Have him/her constantly complain about the loss of their armor on the voyage over. Of course they remind everyone that they don't regret their decision to save the less fortunate instead of their armor it was their duty as a knight after all. Take the followers background option and make sure he always says it when they can hear. Not sure if he actually saved them or was maybe saved by them and he's just lies about it to make himself look good.
the next campaign I run might be stealing this campaign idea. Thanks OP.