A lot has changed since Zen 1. If you bought the first gen you would be running DDR4 -2666. You would also NOT have PCIe4 (or 5 as found on AM5). Putting a 5800X3D in this would be a waste. You would never be able to get the same experience as you would putting it into a board that came with Zen3 so don't compare what 5800X3D is capable of if you think anyone is going to put one into a first generation AM4 board.
Tons of people are getting new cards as often as every year. A buddy and I bought our 1080s at the same time (on sale for $500 in 2017). Since then he has bought a 2080ti, 3080, 3080ti, 3090, and finally a 4090 last fall. Six cards in five years. The benefits of no spouse or kids. These are the jokers that are keeping GPU prices so high. I'm still running the 1080. He also built new PCs too - he has a 13700 now which replaced 5900X.