The post is from 2011 and it's been awhile since I started using 'ip' instead of 'ifconfig', but everybody, myself included, seem to continue using 'netstat' and not 'ss'.
Old habits die hard. Also, I don't particularly like having to learn _yet another_ command to get what I want. It's bad enough having to learn differences between operating systems. Learning differences between operating system _versions_ is really quite annoying. Add in a healthy dose of bias (I seem to recall seeing one of these commands was just a python script instead of a compiled program), skepticism (about it being 'better'? it's different, for sure, I don't know about 'better'; it doesn't appear to use the normal command line switch methods, so that's definitely not better! and, one command which has to parse subcommands? that flows against the old adage of "have one purpose, do it well"...), and paranoia (why change it? why? the old one was just fine and did exactly what I wanted!); you end up with an old guy like me stuck in his ways.
Edit:
Also, I wasn't aware that the old commands were deprecated and definitely didn't have a handy one-to-one conversion reference like this link. So +1 for that
I like most if the new tools, but the 'ss' command produces output that's hard to skim. When outputting to a terminal it tries to justify the columns, hiding some information on the next line. When you pipe it through cat (so it can't detect a tty), the columns don't even line up.
Honestly, why people don't use tabs in terminals is beyond me. It's easier to parse in nearly every case that doesn't involve a text editor of some sort.
The ss program also seems to be missing the feature to show you the username or uid or that the process is running as. It is a useful feature of netstat.
interestingly enough, `ss` (usually w/`-ltun`) was the first thing i successfully reprogrammed my muscle memory to (after 12y+ of using netstat). `ip r` instead of `route` being a close second.
i have come to very much appreciate the consistency and discoverability of the iproute2 cli.
Edit: Also, I wasn't aware that the old commands were deprecated and definitely didn't have a handy one-to-one conversion reference like this link. So +1 for that