Why is ageism accepted/tolerated on MN?

[IntermittentFarting]

I reported a post earlier today that the poster actually prefaced with "Sorry for an ageist post..."
wherein elderly people were moaned about for having the temerity to go shopping and stubbornly pissing everyone off with their very existence.
After a while I had an acknowledgement about my report, and saying that MN would take a look.

Well... it's still there.

Whether or not the post is ageist is not up for debate: the poster themselves even said it was, and intentionally posted an acknowledged ageist post.

Can you tell me why MN accepts ageism?

@BIWI last time I checked, there was nothing stated in the Talk guidelines which said that you have to read every single post before you comment. Why would I sit here and read four pages of comments when my response to the original post would still be the same?

You’ve said that people on this thread are also against ageism towards the younger generation, then that’s great to hear. That doesn’t actually do anything in regards to other posters across the site. Going by MNHQ’s response on the first page, that’s unfortunately not going to change either. Have a good day😆

Er ... because it's a discussion forum?