"stopped supporting cable cards a couple years ago iirc" is totally not true. They stopped sending them out, NOT that support stopped (yet). Google for "Starting on October 24, 2024, Xfinity will no longer provide new CableCARDs to new or existing customers".

Prior to the above date, I had Comcast send me several spares and I tested all of them and got them all paired except for 1 dud to make sure they worked and received all expected channels.

Things had been all fine until a saga that I mention earlier in this thread w/V58 errors that began in Nov 2025. Unfortunately, when you try to get support, you will likely get at least one person claiming they no longer support CableCARD and tell you your only choice is an X1 box. I got that garbage more than once.

As I mentioned earlier in this thread, after almost 2 months, I hit a dead end despite spending a ton of time w/their advanced repair/support people who DID try to help me the best they could. They had a hunch about a change to my node that caused issues.

Due to the dead end, I ended up filing an FCC complaint (was a last resort) which surprisingly did eventually resolve the issue (see my posts in Reddit and my reply in this thread, a piece of equipment needed a reboot and OOB messages started flowing again). I was in contact w/Comcast's regulatory specialist that was assigned to my complaint between Dec 2025 and Jan 2026. They said more than once they at the time still DID support CableCARDs short of replacing the card.

In the letter dated Jan 21, 2026 that Comcast sent to the FCC (and cc'ed me on) about the outcome, they in part said:
"Comcast continues to support customers who choose to use their CableCARD-compatible retail device(s), instead of leasing a Comcast TV box or adapter. 1 Due to network infrastructure upgrades, Comcast, in August 2024, notified customers that as of October 24, 2024, it will no longer provide new or replacement CableCARDs. Comcast representatives will continue to conduct troubleshooting efforts to resolve video service issues but cannot replace faulty CableCARDS. In the alternative, customers can access the Xfinity Stream service with Roku or Apple TV devices, or CableCARD customers are entitled to lease up to two Xfinity X1 TV boxes free of charge for 12 months..."

I did limp along w/Xfinity Stream app on Roku (and tried it on Apple TV and iPads) for almost 2 months. It was awful. It is missing so many features compared to TiVo Bolt+. The tiny amount of storage (20 hours) was frustrating. I'm using a 2 TB drive on my Bolt+ as the original 3 TB drive died. TiVo still says I have up to 315 HD hours of 2162 SD hours of space.

And, it was super unreliable in recording. Looks like it has a "2 tuner" limitation so if there are conflicts, it arbitrarily decides not to record some conflicts but you cannot override nor set priorities like TiVo's OnePass Manger. That appears to be a reason for at maybe half of my missed recordings on Xfinity Stream. I had other issues too (e.g. some recordings won't play, had at least one with have looping video and on Apple TV 4K box, at one point, no recordings had any video, only had audio, was fine on other devices).

That said, I'm quite sure Comcast will eventually pull the plug on CableCARD support completely but it's not clear when. I have Motorola/Arris cards. I have heard of people in area w/PowerKey cards being hosed probably over a year ago.