I agree, it's not the best example. But I still think that my original point is valid: the Switch is rich with games and what OP was missing is just information, literal seconds of googling.
I believe most of those fall under "free-to-play titles that manipulate people to spend money" plus require an active internet connection (I wasn't clear if offline gaming was desirable for OP) but yes - I agree that there is free gaming to be had.
Here are 16 games that are free to play on Switch: https://www.ign.com/articles/best-free-nintendo-switch-games
Here are 500+ games that have playable demos: https://www.dekudeals.com/games?filter[demo]=available&sort=...