All Distros are deprecating them , so they can remove them in next releases.
I can argue how working is 'ifconfig' for example - add an ip via "ip addr add' and then check with ifconfig the result
I still use arp tool and I didn't know it is being deprecated. For netstat - we got 'ss' and it was more than once when I had to rely on 'ss' to check a port that is not used by anything (actually a kernel socket ...)