I've only seen this sentiment on nerd forums but never among my less technical friends, so I'm a bit reluctant to accept this wisdom honestly. That said, if you're just building something for a technical crowd you'll probably make them much happier if you make your implementation use native widgets and take up much less memory and redraw faster at the expense of a slightly jankier UX. Though, this is probably why IRC clients all feel janky lol.
For example a lot of my less technical friends/family really like the visual design of Spotify even though it conflicts with a lot of design language on MacOS, Windows, and Android.