When writing this, [Wayback/Archive.is] ftfy · PyPI:history indicates ftfy was already at 6.0.3.
It is still my goto tool for figuring out the cause of Mojibake. I remember writing about it the first time in 2016 (see the ftfy category) when it was already at version 3.0, discovering it after a few Mojibake posts.
By now it even understands right-to-left Mojibake garbage: 
[Archive.is] Elia Robyn Speer on Twitter: “ftfy 5.8 is out! … A user reported that Hebrew text wasn’t being fixed, and this made me think about how to expand some of the trickier cases to non-Latin alphabets.”
Mojibake mishaps still happen a lot, so by now I hope I will have done a Mojibake themed Delphi talk at one or more conferences.
The Wiert Corner - irregular stream of stuff 