Honestly, if he hadn't smack talked them the day after they got that 45 day budget passed, they probably would back him. Hell, if we didn't need to get the big budget passed in 45 days, they'd probably do it just to fuck with the Republicans. Or they could fuck with McCarthy by voting for him and making the GOP think he's cut a secret deal with the Dems.
There has definitely been a trend in the media of downplaying CP and CSAM recently. I thought others were crazy when they said it, but after paying attention a bit, yeah, it's happening. My theory is that it is because of algorithms filtering stuff like that out.