No. Actually he wasn't political from day one on the Late Show. At first he shed his Colbert Report persona and tried to do the typical "make nice with everyone" late night host a la Carson, Leno, and Letterman. Thing is, times were changing, audiences were expecting and demanding sharper wit, speaking truth to power, and takedowns of the high and mighty. And ratings started to slide. So Colbert adapted, brought elements of the Report back, but more overt and open than the playing th coy in-character persona from the old days. And ratings recovered. That worked swimmingly until COVID and malevolent mega media manipulation blew ups the entire television landscape and installed their minion to purge CBS of anyone who's not a true believer.
In his personal life, he's catholic and raising his kids as such, conservatively but not to be bigots. He's also a HUGE nerd and MASSIVE Tolkien and LOTR fan. He'll do fine as a writer on a LOTR movie. He havs the chops for it, and he "gets" the material. I knew the MAGAts were delusional from the outset for thinking they could silence him and that he'd bounce back. Though I must admit it's kind of a bummer he'll be holed up in a writers' room instead of back on air immediately on another platform.