Everyone has different requirements and motivations for their hardware choices, real or perceived. As long as they feel good about their selection I don't see any harm in buying something. Ofc if someone needed advice, that's all I can give, but then it's up to that person to decide what they want in the end.
I haven't played competitive FPS for years now, but when I did I can attest that high frame rates mattered, and still do, since due to the netcode of those FPS (which are still massively popular now) meant that high frame rate was correlated with some competitive benefit. This led to other things, such as a high end GPU, but running on low resolution/low quality. Now, whether that competitive benefit directly resulted in the player performing better can be contested, as most players do not play at a high enough level to warrant extreme emphasis on said frame rate. However, this does not matter since as with many things in life, people make choices based on emotions and whether they "feel good" about it or not. It's the same reason why a friend bought a Corvette ZR1 when he can only drive it as fast as someone with a base Corolla.
Nowadays I also like enjoying single-player games at a higher resolution and graphical quality, so I'm always GPU-limited. My GTX 1080 Ti can barely break 4K 60 FPS, and it is not consistent. I was disappointed in the RTX 2080 Ti being quite expensive when essentially Turing is an overclocked Pascal with RT and Tensor cores. An RTX 2080 Ti still can't consistently average 60 FPS on Ultra quality, even though there is a massive price premium. Thus I will wait and see about the next generation GPUs later this year.