Thanks for sharing your hack.
Thank you for this. I cannot fathom what goes through Adobe's mind when they make these terrible decisions. They take perfectly good products and make them worse. It's clear that their developers aren't using Dreamweaver or they would have known not to take that out.
Here's another solution I've found that people might find a bit easier.
1. Download DW 2015 and open it.
2. Add and/or Edit your snippets there.
3. Close DW 2015.
4. Open DW 2017.
Your new snippets are now available in DW 2017.