Hello Peter:
Thank you for describing the how and why of Voice Control customized commands. I was able to set it up easily and not confine the swipe-up gesture to TikTok.
I have been experimenting with and using Voice Control since it first came out in iOS 13. I am not disabled, but find it very helpful. I experimented with playing basic app games that require touching and moving things on the screen. I used the "grid" mode with movement commands like "drag from x to y."
If you or any readers are interested, I would be pleased to send videos of me playing these games using voice commands only.
Thank you.
Steve Frank
Baltimore, Maryland