i dont really need airflow in this build, the only airflow i need are on my radiators, and all the intake fans have clear open spots available. The vrms on my mobo and the ram heatsinks are the only thing that would require airflow in those pictures, but i have waterblocks for the ram and the motherboard in a box next to me, so airflow is basically a non issue at this point.
For air cooled builds yeah definitely i wouldnt use an sth10 for air cooling ever.