Chromium is awesome and all, but it's just way overkill for many apps, and doesn't make sense for the download size and the need to support auto-update for security features.
I personally prefer the system webview because you don’t have to rush update your app for every chromium security update. And on the web making things cross browser is a normal part of the job and instinct imo.
But there are a ton of early startups that only have bandwidth to support chrome/chromium in their complex webapps and want a quick way to port their web app to desktop app. For them taking on the security burden and increasing bundle size is a good tradeoff to getting that consistency.
Luckily electrobun has a custom zig bsdiff implementation that generates update diffs as small as 4KB and self extracting executable that uses zstd so at least the file size is less relevant of a concern compared to electron.
Ugh!
People writing web apps without supporting anything else than Chrome should burn in hell. (And that's a pretty useless decision anyway since “supporting chrome” really means supporting two engines: Chromium and WebKit, because Chrome on iOS uses WebKit internally …)