Why are boards instead of jira projects selectable in a jira data scope?

[pogopaule]

My question is the headline. I am confused why boards were chosen instead of projects.
Boards are defined by filters on issues, hence they are only views on a subset of all jira issues. If a jira issue is not selected by any board, DevLake won't be able to ingest it.
To me it would make more sense to define the data scope for jira based on jira projects.

[klesh]

1. sprints are bound to boards which is essential for some metrics IIRC
2. boards has filters so users have control over what to be synced