And it completely cut off older devices from being able to access content that often didn't need to be transferred over TLS.
It's commercial infrastructure, not a fetish.
You saw the same arguments when the Python Cryptography library started adopting Rust to replace memory-unsafe C code in their C library. People running, like, DEC Alphas in their basements for sport were furious. It was on the front page of HN for several days. It blew over, because nobody really cares about those people in a durable, meaningful way.
Same situation with FTP. It's dead. Stick a fork in it.
For whatever it's worth: those industries should not be relying on FTP. FTP is bad. But I'm not advocating to ban it from the Internet; rather, I'm just saying, nobody should make software security compromises of any sort to continue supporting it.