Actually, my memory of time is a bit off. Make that 20 years or so ago.
@ptribblePeter Tribble about 20 years ago sounds reasonable.
OpenBSD removed the last traces of telnetd in the base system in 2005: https://marc.info/?l=openbsd-cvs&m=111700017509177&w=2, not sure how long other systems kept theirs (but could be years in some cases)
If you have a fediverse account, you can quote this note from your own instance. Search https://mastodon.social/users/pitrh/statuses/115932872045338952 on your instance and quote it. (Note that quoting is not supported in Mastodon.)