Antimicrobial resistance is a major concern, however not all of that information is correct. It is only recently that there are any medications that combat viral infections (though they mostly only control/slow said infections and do not cure them), most treatments are against bacteria, some are against fungi and protists. Misuse and overuse of antibiotics is a major reason for the resistance problems we have today. Many antimicrobials have side effects, especially the ones against fungi and protists.
~~Nonpathogenic microbes are our friends~~