I basically gave up on podcasts on the desktop and only use AntennaPod on my phone. When I’m at my desktop, I have my phone paired with my computer via Bluetooth and play that way. I can pause it on my computer via KDE Connect (GSConnect on GNOME).
Bluetooth audio from phone to desktop works on Fedora Linux quite well. It probably works on other Linux distros too. I’m guessing it might also work on other OSes like Windows and macOS.
KDE Connect is available on Android, iOS, KDE (and can run on other desktops too), GNOME (via the GSConnect extension), Windows, and macOS.
This solves the syncing problem by sidestepping the need for it. My podcast state is always correct and I always have my podcasts with me, even when out and about.
It certainly is a differentiator: uBlock Origin already works best on Firefox. https://github.com/gorhill/uBlock/wiki/uBlock-Origin-works-best-on-Firefox
And when Manifest v3 is fully enforced in Chromium (current date is slated to be July 2024), then the more restricted uBlock Origin Lite would need to be used instead.
(I’m not sure if Arc will fully adopt v3, but they might not have a choice at some point in time.)
The Lite version still works well considering all the restrictions, but has a lot of limitations: https://github.com/uBlockOrigin/uBlock-issues/issues/338#issuecomment-1507539114
TL;DR: The way uBlock Origin works on Firefox right now is already better, but if Arc has to go along with Manifest v3 in Chromium in a few months, then it’ll be even more of a differentiator.
It also looks like they’re even thinking about rolling out their own tracker blocker (instead of using uBlock Origin) as a result of the Manifest v3 changes:
https://www.reddit.com/r/ArcBrowser/wiki/index/#wiki_how_will_arc_handle_the_transition_from_manifest_v2_to_manifest_v3.3F
https://twitter.com/joshm/status/1728926780600508716