Well, in regards to the Threads-Owner Question: I got my iPhone 11 Pro on October 16th and did one mistake: i upgraded from iOS 13 to the (at this time) newest iOS. Since then, my phone is a piece of junk for me- i jumped on the Beta Train in hope, it would get better- but it's not.
Currently i'm still using my iPhone 8 Plus with iOS 12.1 installed- it works fabulous. But my new iPhone 11 Pro, is just not (for me) in terms of Battery (Software issue i guess) and this nasty "Location-Arrow"-(Bug or Feature, that's still discussed in another thread here).
Overall, I really don't use my >1000$ Phone because of it's buggy software. So to answer your question: My feeling is, Yes it did ruin my phone. I don't have the "amazing experiences" Tim Cook was presenting during the Key Note, I assume he's not using a normal iPhone with the normal iOS on it.
Right now I'm doing another DFU downgrade to iOS Beta 13.3 Beta 2, because Beta 3 sucks my battery empty.