Earlier quoted context omitted.
For a long time the big advantage of LCD was just size and energy use. You lost a lot of the clarity with the conversion from analog VGA or SVGA signal in devices that predated DVI and HDMI connectors. It would be really hard to trade in my 28" 4k display for any CRT I've ever had.
For work, LCD is absolutely superior. Gaming - especially shooters -, however, are a totally different use-case: Refresh rate is absolutely necessary for quick reaction times, while something like readability is not as big of a factor (Games tend to use big and easy-to-read fonts). Of course, you still need some color quality to spot enemies, but it's very different from reading text for several hours.
This reminds me of weekend warrior bicyclists dropping $5k on components to save a few ounces of weight and go a tiny bit faster.
Most people are average enough at video games (or whatever their hobby of choice is) that they’re still going to be average whether they have a CRT or an LCD (or whatever pricy pice of gear they “need”).
Sure it’s fun to spend money on your hobby but to say it’s “absolutely essential” is a little silly.