The flag is problematic for many reasons:
- It is deprecated
- It is a global flag, requiring a restart to change, as opposed to a flag that can be set on each RPC invocation
- It may be hidden in config files by accident, hard to debug, causing LND crashes and bugs, see #28730 (comment)
- It makes performance improvements harder to implement: #17529 (comment)
Fix all issues by removing it.
If there is a use-case, likely a per-RPC flag can be added, if needed.