You can play Xbox games on PC Day One so there really is no reason to own the console if you have a half-decent gaming PC. PC is also the only platform where you can also play PS5 games... eventually... so it is really the best platform for games if you can deal with the issues that come with it (shader compilation stutter, having to upgrade your graphics drivers, etc). On the plus side, you have more customisation options on how to play games, you can play them well above 120 fps if you want if you have the hardware and then there are user mods and tweaks you can use. I have always enjoyed the flexibility of PC personally and the much cheaper library of digital games.
The only reason to own an Xbox and a PC really is if you want to play older Xbox and Xbox 360 physical games and even then you'd be better off owning those consoles rather than a newer one since there are a lot of games that aren't supported on the newer systems such as RalliSport Challenge 2 and the Project Gotham Racing franchise.
I own an Xbox Series X, I bought it a year after launch prior to upgrading to a new PC, so I did use it. Now though, it basically sits unused and has done for 18 months and really should sell it. I cancelled my Game Pass Ultimate subscription back in May because I just wasn't using it plus I despise the terrible Xbox app in Windows that constantly breaks games with updates or throws up random error codes that, oddly, never crop up on Steam where I would much rather play Xbox games such as Hi-Fi Rush, Gears of War 5 and Forza Horizon 5.
Xbox quite literally sucks these days. Maybe they can turn it around over the next few years but I'm not holding my breath as Microsoft seem to just make a mess of everything they touch these days, including Windows!