This is also not like some stupid patent dispute or DMA compliance argument. These employees are directly responsible for stockpiling personal identities of millions of people for the express purposes of making the surveillance efforts of their government easier. That's a very political action, which is directly aggressive against a country's citizens, and they should feel that.
In other words you would be fine with Canada arresting employees of Clearview if they tried to enter the country after Canada deemed them profiting members of an organization that was breaking the law in Canada?
If I go to Saudi Arabia after having called for their leader to be executed on X for his treatment of women, yeah, probably not a good idea to go.
If I go to Iran after saying Khamenei deserves a rocket to his mansion, yeah, probably not a good idea to go.
If I go to Europe after having run a multi-million dollar scheme affecting European countries by white-labelling services from North Korea (legal in Brazil), and I'm a Brazilian citizen and know Brazil almost never extradites, yeah, probably not a good idea to go.
If I go to the US with my two 12 year old brides from Niger, yeah, probably not a good idea to go.
You're proposing an alternative where people can just commit crimes with no recourse from the victims simply because a border exists somewhere and they commit the crimes on one side of the border.
Would you expect it to be reasonable for Canadian citizens to be shooting at Americans on the border and it unreasonable for American authorities to arrest them if they came to America?
Physical violence is incomparable to working at a company that did something that would be illegal in a certain jurisdiction. Should the person maintaining Clearview's website be arrested in the EU simply because they work there?