Your argument can also be used against free speech: Once some expressions of profanity/degeneracy are allowed and protected as 'free speech', a deluge of such speech is sure to follow—lowering the average quality of discourse and culture for all. I invite you to recognize that 'freedom' isn't some ideal and attainable state in and of itself, but rather describes a system of trade-offs. To be more free in some ways is always to be less free in others. I understand that it's emotionally compelling to speak of these things as platitudes and absolutes, but in reality the particulars matter. Wise governance and personal choice are both important; what we need to do is find a sweet spot between the two and protect each from their own worst tendencies.