If a technique is working for you, it’s a good technique regardless of what anyone says.
There are only two requirements for a technique to be considered “good:”
- You can make it work against quality opponents
- It does not compromise your alignment.
The following have no bearing on whether a technique is “good” or not:
- You invented it
- Nobody else seems to use it
- It’s from another grappling art
- Your instructor doesn’t like it
- Senior students don’t like it.
Jiu-Jitsu is a very personal game, so don’t let anyone else tell you your favorite techniques aren’t good if you have evidence to the contrary.