This not even remotely close to true. Like not even a little bit. I use Cursor and Gemini for work daily and I'd be hard pressed to think AI is a "better" programmer than any professional software engineer. Sure it makes writing code faster and more efficient, because you just click tab and three lines are written for you. It absolutely isn't better than me at coding though.
The claim about math is even more unbelievable than the claim about coding. We still don't have a single theorem proved and published by a LLM without human aid. LLMs barely follow a discussion in basic topology. It's incredibly ridiculous to state they're better than 99% of people. More like 0% of mathematicians and maybe 50% of college freshman.