Word on the street is that 2021 could be huge for Xbox with UPlay rumored to be coming to Xbox Game Pass next year. Several big ticket titles such as non-MMO Bethesda games, Forza Horizon 5, Starfield, Wolfenstein 3, and other AAA games are expected to come to Xbox in 2021. Microsoft's plans of acquiring Sega may also finally bear fruition next year.
https://www.notebookcheck.net/UPlay-to-hit-Game-Pass-exclusive-non-MMO-Bethesda-titles-Forza-Horizon-5-and-several-other-AAA-exclusives-incoming-along-with-possible-Sega-acquisition.512397.0.html
If Forza Horizon 5 isn't available on the Xbox One X I'll be mad as hell
So basically, you refuse to upgrade to new technology, and you'll be "mad as hell" when future games, that are going to be more demanding on hardware, will not run on old hardware? If you buy a TV from 2004, are you mad as hell that you can't get 4K resolution on it? Technology evolves. And to take advantage of it, you have to buy the newest version of whatever you're buying. Not expect that something you have owned for years, will suddenly become more powerful.
They said it is xbox exclusive. So relax, xbox one x should have Forza Horizon 5 as well. It is still a very good hardware.