I've not used Windows in a very long time so forgive my ignorance, but I always heard that it was a bad idea to connect an XP machine to the internet because of the amount of malware sloshing about. In practice is that much of a problem for modern-day XP enthusiasts?
The kind of passive infection that is shown in popular videos like this one (https://www.youtube.com/watch?v=6uSVVCmOH5w) tend to only happen if you hook up an XP machine to be directly accessible to the Internet. Like, if you connect your XP machine to your router sitting in the middle of your Internet connection and don't forward every port, you should be fine in that regard at least.
There is also Supermium which is a relatively recent version of Chromium backported to run on Windows XP with all the security patches that brings, but with that being said I still would not do anything security critical on it.
Yeah it was more of a problem back in the day when dial-up and DSL were more common, and home users would often have their computers directly connected to the internet if they didn't have multiple computers and a router. This was especially problematic before XP SP2 came out with the firewall enabled by default.