Hi @yanxianl!
Unfortunately, I think this is the best option right now, if using q2cli (there are shorter options if using the Artifact API, but if you haven't worked with that yet, it might be more difficult than the cli).
We have an open issue to track the development of a convenience method for this type of filtering --- we will update this post when that becomes available, but in the meantime, the procedure outlined here (the post you linked to above) is your best bet.
Let us know if you get stuck or have any questions! 