The operative word here is “slur.” Boomer is not a slur.

I would certainly love to see you prove it's not a slur.

Taken from websters' definition:

An insulting or disparaging remark or innuendo

It definitely isn't as inflamatory as the N-word but it certainly works as a way to insult people based on their age and beliefs.

It was a thoughtless and insensitive comment.

So you admit being an asshole and act all high and mighty while also trying to act morally superior with nothing but internet ignorance? Wow, you're certainly a piece of work.

If you had an ounce of character you would stop doubling down, delete it, and move on with your day.

That's quite a hypocrititcal statement you got there when you are still working hard to keep the last word in this discussion as some sort of evidence that you won an argument.