TikTok isn't all that different from YouTube. Like YouTube, you can find a lot of stupid or outright irresponsible content. But also like YouTube, there is a ton of amazing, informative or outright entertaining content on the platform.
In short, TikTok is whatever you want it to be. Just like YouTube.
I use it sometimes and most of my feed is just funny commentary by people in similar life situations or who have similar viewpoints. I'm sure there are people doing irresponsible things, but I just wanted to chime in and say that it's not strictly for hooligans.
Plus, maybe the idea that someone needs to present themselves a certain way to the public to be hirable is a millennial thing. This could be a glimpse into the future of a world filled with Gen Z adults, who have internet culture and mannerisms in their DNA.