The show was very much a real adaptation of Batman. Several episodes were based on specific issues. The show was a live version of the Silver Age Batman comic books. It may not seem correct to fans of Nolan or 21st century graphic novels, but it was exactly who the character was in print at the time.
This article in Forbes explains it in detail.
https://www.forbes.com/sites/scottmendelson/2014/11/11/the-batman-tv-series-is-the-most-important-batman-story-ever-told/#1cc53b483517
I’m fully aware that the Batman comics were like that at the time of the 1960s (though IIRC it wasn’t a satirical comedy like the show). I was just saying that I never considered it “real” Batman, in the sense that it adapted the character as he was originally invented and came to be known as again in the 1980s; a dark hero.
I grew up preferring the Burton films and TAS as the definitive Bat-aptations (and I still do), so taking the '66 series seriously would’ve been difficult, and all things considered, nobody was meant to take it seriously in the first place. It was a fun, camp-filled comedy romp that, in its own way (as mentioned), was a comic book on the screen. (Don’t even mention Chris Nolan, those films aren’t Batman or even comic book at all.)
I actually watched the movie more than the series as a kid, though after MeTV started airing the show I would watch it on there frequently. I haven’t seen the new animated film though.
Anyway, I wasn’t saying that as a negative to the show, it’s just how I thought of it growing up.