Okay! So all over the place you'll get certain kinds of beliefs about werewolves:
-There's still a solid percentage of people who don't believe they actually exist, though in modern times that number has gotten fairly low -- there's just a lot of evidence out there now. ""werewolf truthers"" are not quite regarded at the same level as flat earthers in the real world, but it's close
-There's people who see werewolves as monsters -- this is particularly common in more rural areas, where 'don't go wandering off into the woods alone' stories featuring werewolves as the mechanism by which the protagonist is punished for their hubris are also pretty common. I'm assuming you're asking about Valdesland specifically for Leon's backstory purposes, and I'd say that it's likely he grew up with these and has unexamined lycanthrophobia (as it were (this is not a serious term)) from it
-There are people whose experiences with werewolves more feature people who have taken steps to manage their condition, so see werewolves more in terms of having a disability. Also for Leon purposes, I wouldn't be surprised if he's hit culture-clash of meeting people who think like this -- or otherwise have softer opinions of -- people that he's grown up thinking of as the boogeyman
-And of course people who have more mixed opinions, or not-very-strong opinions
More populated places (including Snowtown) have a higher percentage of people who are more live-and-let-live about werewolves, in part because these places also have more resources to help werewolves manage themselves and to be able to defend the area from werewolves who have less interest in being prosocial about things. Less populated places have a higher percentage of people who at minimum view werewolves as something to be cautious about and at maximum something to be eliminated entirely (very similar to views on non-were wolves, in areas where, for example, livestock are at risk). Snowtown in particular also has a general more-positive-than-average view of people with abnormal traits (consequently, the populations with those traits are also higher-than-average in Snowtown), so werewolf opinions skew a little more neutral-to-positive than in a similarly sized city in Chavidea or Valdesland
All of that in mind I think it might make sense for Abraham to mostly have experience with people who at worst pity him, especially given his privileges, and if Leon has a negative reaction I would expect Abraham to be surprised by it. I don't remember if the current direction SBB is going still has werewolves attacking people in it, but it would also make sense for Abraham to have a personal interest in stopping that from turning public opinion more negative. (This is something a lot of werewolf groups/"packs" take upon themselves, is stopping solitary or more violent groups from becoming a problem)
Let me know if you have more specific questions, or if any of that's unclear! I'm also trying very hard to not have it end up being a metaphor for racism, but that's a distinction that needs to come through in writing, so please keep that in mind as you're playing with it