In a winamp discussion thread a couple of days ago somebody linked to
https://www.strawberrymusicplayer.org/ , and I had the same reaction to their "It's written in C++ using the Qt toolkit and GStreamer. Strawberry is compatible with both Qt version 5 and 6.”
It’s definitely weird for end-user software to promote itself based on internal implementation details, but it’s by no means a rust-exclusive phenomenon.