It's kind of like Reddit and other "customize your feed" social media. If you subscribe to the defaults, yeah, it's hot garbage. If you select content creators or topics that support your individual growth then you get a much different outcome.
Of course not to say I couldn't have benefited from the same topics via another type of media. But I enjoy the few minutes I spend on TT per day, seeing what my favorites have posted, etc. I even met a cool dummer named Zooich in Japan who I enjoy following and interacting with each week. And I've made a bit of content myself which I'm proud of.
Lastly, in no way does my positive experience diminish the negative issues surrounding TT. I fully agree it contributes to reduced attention span, spreading misinformation, etc. -- just like most other forms of social media. And there's a very real risk of it becoming state media in the future. I just wanted to provide a different perspective other than "TT is terrible in every way, ban it!".