Open vs solo boils down to one thing in my mind. It’s not your opinion of gankers or the ethicality of being forced into combat, because any scenario a player can create, NPCs can create as well, so in that regard open/solo are no different. It boils down to difficulty level. Where in open the ceiling on how difficult a scenario can be or become, aka the skill ceiling required to overcome it, has the potential to go to the highest it can be in the game, and in solo, the skill ceiling needed is lower due to NPCs being the only threat, which are at best predictable.
that’s the difference. If you play solo, it’s not because “ohhh those players are not good human beings why would I put myself in a situation where I can be out into combat without consent ” its because solo is easier.
if you play in open it’s usually because you want these high stakes situations that require you to have honed your skills some and have less room for error.
the gameplay mechanics in both modes are the exact same. The way you handle those mechanics in both modes are the same. The only difference is room for error and skill required to successfully navigate the scenario and not see a rebuy.