One of my first jobs was in Tcl and I still wake up with night sweats about it. Some languages were just meant to die. I have no idea why anyone would be interested in using it in 2022.
It's on most of the other fronts that it did.
But any harm done by Tcl is more than redeemed by its creator being the author of one of my favorite of all programming books, A Philosophy of Software Design.
I briefly worked on a WASM to TCL transpiler so I could write EDA scripts in Rust. Got it kind of working but WASM is actually quite large and TCL integers in the version I was forced to use (thanks PowerArtist) are completely broken so it ended up being not worth it.
obviously I was the go to expert on everything related to computers and I still remember the shock when she told me that I need to spend my weekends on helping her to understand tcl.