The original Xbox was pretty reliable. The main issues it has are a leaky clock capacitor in older models that needs to be taken out, and disc drives that can go bad over time, especially in older models. My first Xbox's disc drive got so bad that almost every game would show the "There's a problem with the disc you're using. It may be dirty or damaged" message that was required to be in all Xbox games. It also started to make a weird grinding noise when it turned on, which was probably either the fan going out or the hard drive (although the hard drives in original Xboxes are surprisingly reliable). I got a new Xbox around 2013 and its disc drive works perfectly, although I did have to replace the power supply a few months ago.

I've noticed that on some browsers (specifically some instances of Chrome), the special effects don't work in my games, which sounds like what happened to you. The bacon is supposed to cook and the Xbox is supposed to get melty like in the picture. I don't know why the issue happens, so I don't know if it's something fixable or not. Maybe it's some disabled setting in your browser? I would recommend trying it again on another browser.