"For someone x I would choose exactly such introductory hikes, maybe even more... If he wouldn't convince me at the start, I would decline the hike."
Exactly so, even on easy hikes you can have problems if you don't know the person, especially if they have some health issues (which you don't know).
Just because of legislation - great responsibility, I decided to lead only easy hikes (groups, club..), demanding ones only known people and max two (preferably one).
Regards