1) That's legit Tourettes and that's what it looks like in an adult who isn't doing it on purpose. Sniffing, eyebrow bullshit, blinking, all those "little adjustment" things are the most common tics by far. Vocal tics are more uncommon and they're usually still not very purposeful. Clicking, coughing, going "ugh", and making weird gutteral noises, and even animal-like noises are way more common than actually saying words.
Tourettes is kinda a spectrum between totally neurologically based actions (like those that are induced in people on certain drugs) and totally psychological, impulse actions that look more like ocd, adhd, or unfortunately bpd attention-seeking. The more complex the behavior is, the more psychological it usually is, just my personal observation. If they go "ugg" and blink it's probably more neurological, if they're addicted to tiktok and are yelling "Beans!" and fifteen other trendy statements, it's probably more mental illness.
A lot of people outgrow tics, but Ethan is pretty much a solid example of what it looks like in an adult man who isn't doin' it for the Vine, and it's always kinda impressed me that he still found his way into podcasting/ being on camera.
2) I don't think he looks underweight. That's just how you look when you used to be fat and you lose a lot of weight. Gaunt.
This type of stuff really makes me pissy when it comes to content moderation-related laws. Because you just know that Reddit, Google, etc, they'll be able to get away with it because they're also doing so much to support whatever the narrative is. But all the smaller sites would be devastated by bad actors, and as such could be easily targeted by gay ops and false flag bullshit. Kinda already is that way with how most chan boards have to deal with CP spam if someone doesn't like them. I don't know what the solution is. I just give Null my money so he can worry about it instead.