Here's the guide I followed. It's for YouTube but it should be the same thing for Tiktok. It should explain how to patch your app. Which is done for legal reasons instead of just linking you to an app.

Or if you want no ads https://github.com/ReVanced

Oh I didn't know there were talk pages. Yeah I agree an apples to apples comparison would be good, but if you don't have that it's probably best to not include it.

Oh wow that is impressive. I wonder what the power draw is like with them being based on server ARM chips

The other comments have covered a lot of the potential positives of a getting a diagnosis. Here's an article written by an autistic doctor on some of the drawbacks:

https://archive.ph/J6tXc (Archive link because medium wasn't showing the whole thing.)

In short, there's a lot of ableism, so it's important to think about what benefits you will personally receive from a formal diagnosis.

I'm not trying to dissuade you from getting one if it's something that you want to do you should go for it. I just wanted to share some info that made me think getting a formal diagnosis wasn't right for me.