I was never in the race anyhoo.
I have a 4090 FE which only has to run a 100Hz 3440x1440 IPS panel, and I still love the picture it displays.
Just d/l the latest patch for CP2077 (which is probably one of the most GPU stressed games out there currently) and with everything maxed, full path tracing, psycho, etc, with DLSS quality and FG it runs at my panel limit and looks fantastic, so a 5090 wouldn't do anything for me.
In fact, currently, there isn't a game I run that can't do 100FPS, so yeh, until there's an OLED monitor released that I want with an obviously bigger refresh rate and/or resolution, I'm good!