I will tell you why I am incensed at this claim. It’s not because it’s demeaning (which, if it’s true, it isn’t). It’s because it shows a terrible, terrible mindset. It shows an outlook of, “It’s not my fault.” I never could possibly have done something wrong. If something inappropriate or Assur occurred with my body (speaking improperly, Chillul Shabbos, anything), it’s because someone else did something wrong. It can’t be that I am at fault. It must have been because of some other person. That is a terrible attitude that causes one to sink deeper and deeper into improper behaviors because it shows an inability to stand up to what you did wrong.
The proper responses could have been along the lines of that there’s nothing wrong with these words nowadays. Or that Ein Hachi Nami, speech becomes loose sometimes and presumably real B’nei Torah are working very strongly on fixing it. Not, “It’s not their fault; there are people doing Aveiros in this world that causes those words to come out of their mouths.”