An x1 slot is an x1 slot, the PCIe version will downgrade but there will still only be one lane because that’s all the slot physically has connections for. It will effectively be a PCIe 3.0 x1 slot.

Pretty sure if you put a PCIe 3.0 card in a 4.0 slot the slot will drop to 3.0, and 1 PCIe 3.0 lane probably isn’t going to work great with a card meant for 4 of them.

Not having a dedicated app on the LG TV is not an option.

When was the last time you checked? Jellyfin has had an app on LG’s webOS store for a couple of years now, although older TVs didn’t get it until a few months later. I’d given up on it and bought a lifetime Emby Premiere licence by the time by TV was finally supported.

Ctrl+Shift+i should bring up the inspection panel. It won’t be for the specific element, but it should have a button to get an element picker.

Apple devices support changing the DNS server through the wifi settings.

It’s “many” like in “Many people on twitter are saying…” i.e. they found 3 or 4 people saying crazy shit and acted like it was a big thing.