This bug report is a parity issue with Java.
The pointed dripstone can be moved with a piston in the bedrock version, but not in the java version as it will break (like flowers for example).
Steps to Reproduce:
- Place the pointed dripstone on or near the piston.
- Activate the piston.
The pointed dripstone will be moved one block by the piston.
Pointed dripstone will break (like flowers).