@KeeganHayden work with whatever works for you. you avoid all the headaches that come with self-hosting wordpress. But wordpress is a beast for customizations.
@heyamberhinds were other wordpress on the same host (except your clients) affected? maybe it's a host vulnerability.
Any custom theme or plugins you were using? need more details…
@gilbert_4_real On a large scale project with a team, everyone doesn't have to go back-&-forth between css files & frontend code every time a colleague edits the css. You can trim all the unnecessary CSS at build time. There's nothing wrong with using pure CSS if your project doesn't need it