A lot of early 3D console games - whether platformers or FPS games, have aged pretty poorly. Go try to play GoldenEye again and see how it feels compared to modern shooters. Really Super Mario 64 is kind of the outlier.
Conker and Banjo Kazooie and Donkey Kong 64 are all cut from the same cloth at mid-90s Rare.
The Xbox release version fixed a few things with Conker but broke others. Honestly Conker was one of the first "parody" type games (at least as major console releases went anyway) and it only works well if you have the nostalgia goggles to appreciate it as it existed in an era where if you wanted to play 3D platformers, you were mostly limited to baby games like Croc, Spyro, or the other Rare platformers.
Plex - in the way users here are describing (important context since Plex’s management has recently shifted heavily to trying to be like Pluto.TV with less emphasis on its original purpose) works as an application that acts like a library for your own media collection.
There are 2 required parts to it :
A “server” or “host” which acts as your library.
A client - like an NVIDIA Shield, your phone, PlayStation, Roku, or eve your Fire Stick.
Without your own server with content stored on it, or at least a friend’s server credentials you can connect to, you are limited to the “Pluto.TV” type ad-driven media collection.
So the answer is “yes it works on a fire stick,” but you will need #1 also for it to be the single source library for your content and not just another ad-riddled garbage service.
I guess it should have qualified it as a “major console release.”