For him at the moment, the deeper issues of the Dressrosa Family are not what he needs to consider now; what he needs to focus on is how to get through this crisis of the Sarca Kingdom.
Although from the daily intelligence system, he probably understood what was going on.
Clearly, the Dressrosa Family still has many connections in the Sarca Kingdom, and these people are likely the ones protecting him. As for another group, they probably have nothing to do with the Dressrosa Family's previous problems and are just targeting the Dressrosa Family itself.
After all, if it were truly related to the Dressrosa Family before, he wouldn't have left the Sarca Kingdom alive.
But the fact that he walked out alive speaks volumes.
Of course, even if it has nothing to do with the past Dressrosa Family, the Sarca Kingdom's strength, comparable to the Sela Kingdom, is beyond doubt. Even just a part of the Sarca Kingdom's power makes Thor somewhat gravely concerned.
