Is this 2x4 support of simply be scabbed to the concrete pier acceptable?
Looks very familiar
The support post for the beam must anchored at both ends.
I can not see if the are laminated with fasteners.
If it is just 2 x 2 x 3 wide with no limitation process I would make a comment.
Easy fix to slide some full CMU blocks and shim the supports tight.
Observation: The wood in contact with the concrete footer pad.
There is no anchorage to the footer pad and also to the beam.
Recommend. A licensed GC observe and make any recommended repairs.
IMO there is lots wrong in the crawl space.