This does a better job at visualizing WHY exactly non-integer scaling is not ideal than I ever did; while it's written about macOS, much of this is true with Linux-based OSes, as well.
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To be precise it's true for GNOME-related stuff since GTK doesn't support native fractional scaling.
Qt apps support it and in Plasma apps can advertise their native support so that Plasma stops using for them the workaround in the article.
