Ofc stuff that is actually deprecated is a different story.
When I see some kind of tutorial or whatever from 2025 by a young dev and he is using ifconfig instead of ip or similar stuff... I am having a hard time holding myself back not telling them ifconfig was deprecated before they were even born :)
On the other hand sometimes when my brain goes full autopilot it still defaults to writing
/etc/init.d/someservice restart
Like sysV wasnt out for a decade by now