Can 2000 flushes damage pipes?

Update: My landlord always seems to want to pick on everything I do in the apartment. And last night I happened to put in the 2000 flushes tabs in the toilet. He came over today with a plumber for some issues we were having and told me not to use them again because they create rust or something like that. Is that even... show more My landlord always seems to want to pick on everything I do in the apartment. And last night I happened to put in the 2000 flushes tabs in the toilet.

He came over today with a plumber for some issues we were having and told me not to use them again because they create rust or something like that. Is that even true? Because I don't believe him at all
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