Nowadays they are instead learning to say "please join our Discord for support"!
But given how often toddlers are "taken care of" by planting them in front of youtube :|
If you have to put a show on TV to give some songs to sing along to or to distract them while you're making lunch, I'm not judging you, and I think it's best to put this content on a gradient rather than black and white.
Parenting is easier if you have 5 family members in walking distance and they also have similarly ages kids who can all play together.
Focusing on such a tiny thing and blowing it up into a huge negative out of context of their rich, busy, and safe lives is really out of hand.
I used to cut all those things to shape with youtube-dl and Audacity; we have a library of a good hundred+ of sanitized songs to play, but with modern world hating files and anything offline, it turned out to be quite a hassle to keep the practice up.
Even if you don't show children videos, but want to play some music, YouTube is still the least-hassle, least-bullshit music stream player (arguably still it's main use for adults, too). Ain't anyone got time to deal with Spotify's ever more broken app. And this is the limit of technical skill of almost all parents. They can't exactly run SponsorBlock in YouTube's mobile app (and paid YouTube doesn't help here either, surprise surprise).
Not making excuses (though I'm not really blaming parents for this) - just saying how things actually are.