Well, they completely ignored canon! Linus is a grade younger, and Miss Othmar is now Mrs Something and is married, and was only Linus’ teacher, not the rest. And the existential angst of CB is essential to the mytharc. Chuck cannot succeed! Geeze! Pay attention to the source material!
Ah, who am I kidding? I just saw it yesterday and I loved it! (I am a nostalgic adult.) We watched It’s Arbor Day, Charlie Brown on Friday. First time I’d seen that in 40 years. It was…not as well made.
I thought the animation was great, the little touches and breaks into “classic” style were well done. I love the parallels between Snoopy and Woodstock and Charlie and Snoopy. Both good friends who help each other.
To be fair, pretty much every TV special was a rehash. Most of the gags, starting with A Charlie Brown Christmas, were just pirated gags from the strip. Lucy’s whole sequence from the Psychiatric Help booth were taken from non-Christmas related strips. Great Pumpkin was a mix of various Halloween themed strips with the WWI flying ace shoehorned in.
TLRHG was shown in several of the later specials.