She seems to have good credentials and mostly sticks to claims that seem to have some evidence...but her penchant for clickbait titles and other YouTube algorithm hacking commentary makes it hard to take her seriously.
But I feel like she takes a contrarian view just for the sake of being contrarian, so it's hard to tell which of her ideas actually have merit, and which simply exist to challenge the status quo, even when the status quo is conclusively proven.
Edit: that said, I really do want to believe this! The speed of light being an absolute limit to how fast we can travel (or even communicate), means most of the universe (even most of the galaxy) will be forever out of reach to us. And that's kinda depressing. Unfortunately, physics doesn't care if I'm sad or happy about it.
Edit2: on the other hand (I wrote the above after only having watched have the video, shame on me), I do find compelling her idea that some mathematical constructs (like special relativity) inherently cannot fully describe reality (in SR's case, SR doesn't include gravity). So saying "special relativity says FTL travel causes time paradoxes and thus cannot be possible" may be true, but since SR can't fully describe reality (hell, neither can GR), maybe it just doesn't matter. That doesn't prove that FTL travel/communication is actually possible, but at least suggests that we shouldn't be so adamant about it being impossible. But who knows, IANAPhysicist, etc.
That, or yes - clickbait contrarian. This seems to get a lot of loud followers though.
Which I guess shouldn't be surprising. Loud followings are usually created by saying things that are controversial, or offensive.
One-way space travel would still be possible using constant acceleration:
>A spaceship using significant constant acceleration will approach the speed of light over interstellar distances, so special relativity effects including time dilation (the difference in time flow between ship time and local time) become important.
>At a constant acceleration of 1 g, a rocket could travel the diameter of our galaxy in about 12 years ship time, and about 113,000 years planetary time.
https://en.wikipedia.org/wiki/Space_travel_under_constant_ac...
This one isn't particularily bad and the content is fine.
When in reality, she’s a bona-fide professional physicist, whose knowledge of physics is why she’s a YT personality. Before she was a YTer she had (and possibly still does) have one of the better physics blogs on the internet as well.
Nothing wrong with making a living being popular on YouTube for making physics videos. Even if you have to occasionally bend titles to the algorithm.
I’m happy having watched it. The argument about particles travelling at light speed and then suddenly having mass and travelling below light speed is one that I haven’t heard before. The note about 0/0 being finite rubbed me the wrong way, but I see the point.
She’s deconstructing absolutist nonsense into something less absolutist. It’s almost anti-clickbait.