I take your point but keeping an app current enough to maintain the ability to hire, is hardest in this area. Not like SQL or C for example. Knowing that can be

I take your point but keeping an app current enough to maintain the ability to hire, is hardest in this area. Not like SQL or C for example. Knowing that can be useful for decades. You build knowledge that persists - experience is a good thing. I can’t tell you the front end stuff I’ve not used in a long time because the list is very long. Much of that knowledge isn’t useful and the code has long changed. I can get involved but I’m not as interested. It’s like in a war when the new guy shows up. Don’t get too friendly; he’s probably not going to make it.