Back in the day, I was a Novell CNE. If I hadn't moved on, I'd have been out of work!
And, people using Flash should too. Every so often, I even still run across a website with a Flash front-end. All that says to the world, is that whoever designed that site is completely clueless.
If the tool doesn't get the job done and has massive shortcoming, it doesn't matter how familiar you are with it.