Shiny keys...
I realize this may be inevitable, but it reflects poorly on the brand to have an expensive computer look like this in a short period of time. If alcohol won't fix it, how about some very, very fine grit paper to give the keycaps a little matte finish again like when they were new? Yes, I realize that putting dust from even gentle sanding into the recesses wouldn't be good, but let's say for argument that I could be very careful. :)
MacBook, macOS 13.0