I frequently use TLDR, and I wouldn't describe it as an incantation. It's for the case where, say, I know there's a grep flag for inverse match or case-insensitive, but don't use it often enough to remember it. It surfaces the (community-driven) top use cases, and it's pretty clear from the context what the flags are doing. (As seen here: https://github.com/tldr-pages/tldr/blob/master/pages/common/... ) If I don't see my use-case in tldr I'll move on to the man page.

OTOH, sometimes I'll copy-paste some perl or awk dark magic from Stack Overflow, and then try modify it piecemeal to fit my case. That's an incantation :)