does this allow only open source extensions, or proprietary ones as well? If it's the latter, is there a way to filter for only foss extensions? I don't use vsc

does this allow only open source extensions, or proprietary ones as well? If it's the latter, is there a way to filter for only foss extensions? I don't use vscode/vscodium mostly because I didn't want to get suckered into having an open source trojan horse bring a bunch of proprietary crap into my system