Present-Day Anime Animation

[psychospacecow]

You know, I find it kind of funny how people are seeing things as "samey". Its not unique to this era of animation either.
If you look at Hanna-Barbera, you'll find a lot of shows that file under the same archetypes as Scooby Doo.
The plot could be summed up in 6 points.
https://en.wikipedia.org/wiki/Scooby-Doo,_Where_Are_You!

Josie and the Pussycats
Harlem Globetrotters
The Amazing Chan and the Chan Clan
Speed Buggy
Goober and the Ghost Chasers
Wheelie and the Chopper Bunch
Dynomutt, Dog Wonder
Funky Phantom
Jabberjaw
Jonny Quest

There are a good few spin-offs of a few of those and likely one or two that I missed.
Point is, the recycled formatting isn't all that new. The same thing happens with movies when no one's willing to try new ideas. Why do you think we've been getting so many sequels to series that haven't gotten them in decades? Its just a safe bet to go with the "slice of life" or "random" formatting that got really popular in the early 90s and mid 2000s. With the transition from television to the wider internet of recent, it really shouldn't come as a surprise that some of these networks are a little scared.