[wardpearce]

I agree, the current Invidious UI is great. Its snappy & is very lightweight.

Yes Materialious is a SPA, if you aren't comfortable with JS. Simply stick with Invidious's interface.

Materialious does provide some features what Invidious doesn't provide, like PWA support, RYD, Sponsorblock, Video resuming, inline chapters & additional theming. But Materialious isn't a replacement for Invidious's interface, just a alternative.

[vegetable]

Maybe I'm not understanding what's meant by sponsorblock support? Sponsorblock works with invidious too and has worked for at least two years. There's a toggle that needs to be enabled in the addon (if I'm remembering correctly).

[wardpearce]

Built in sponsor block, not a addon. So it works on mobile