Honestly, it's more work to use the curl command and for some examples I've tried with cheat.sh I didn't get any answer, which then costs me even more time to look up the actual answer.
Your tool tells me from the start, what I can get and what I can't get. So I go on the site, write down the language/framework/whatever and get an answer. Better UX and to be honest, way better and modern UI.
And after looking at how cheat.sh works I wouldn't use a tool that requires me to curl everything. Some may like to use it, but I prefer not to.