How did you notice that?

Thunderbird definitely does have autosync nowadays. No tray icon, true, but it can send native notifications which isn’t much worse.

It’s Mafuyu from Project Sekai. She looks like that all the time. Wasn’t able to find this specific image, though.

People have already said how to fix this, but I’ll add this different piece of advice: start using FreeTube.

It’s not much of a stupid question even given that - for a refractive medium, speed of light can change with its movement. Though for air it’ll be extremely hard to directly notice; it has n≈1.0003 so speed of light in air is already 0.9997c, and increasing it to, say, 0.9998c would require moving the air at 0.166c.

Can confirm, UAD (which is internally just adb) works fine for samsung crap.