I mean I never said that it doesn't affect adults, just that kids media today has to not only compete with other shows, but short order attention grabbing videos which is not something that was nearly widespread back when our gen was kids. So the enviroment changed to reflect that.
Also, there is actual belief that short term made to order videos and social media does actually have a negative affect on attention spans, at least in the short term. Not proven per say, but there is belief of a correlation.
Source 1
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And other studies extend back to Gen Z days so it's not like adults weren't affected, it's just under heavy scrutiny now cause things like TikTok, IG Reels, and YT Shorts exist and take the world by storm.
It's not the kid's fault though. People say they gotta go outside and all but they really don't got a place to go, the Chuck E. Cheese's of the world are all disappearing or been priced out for them. Parent's aren't parenting their kids, schools are dropping basic curriculum like phonics because politics, etc. Sad to see.