I wrote more above, but I cannot find anything to support this claim about PAS being used because it reduces manganese either.

The mechanism of action of PAS against TB is in the Dihydrofolate Reductase pathway: https://pmc.ncbi.nlm.nih.gov/articles/PMC5395024/

I can only guess that this commenter saw that PAS can also be used for manganese chelation and jumped to conclusions?