Comment by everfrustrated

It's reasonable for a country to want to know if you're likely to abuse your visa.

Eg your socials might show you are a professional paid speaker at conferences. If you applied for a tourist visa that would be reasonable to flag you and ask you if you have paid gigs on the wrong visa.

Europe will also ask the same questions for foreigners. If you're a young woman travelling on your own you can expect questions to challenge if you might be earning money as a nanny on a visitor visa. Checking their phone messages to see if they've been making arrangements to this effect is a very straightforward way to determine intent.

Not everything is an evil conspiracy.