This does not read like a lawyer letter. Something is off…
But there are many more; some more modern examples: https://abovethelaw.com/2014/07/the-greatest-letter-ever-the...
It's... one way to do things; most lawyers don't write letters like this, but it's hardly unprecedented.
(Edit: my mistake their counsel!)
And the first example in the second link, quote ‘This one is kind of fudging the title of “lawyer letter” since the bar’s owner wrote the letter pro se.’
Written by the team's general counsel, not ball players.
What do you think is 'off' here? Like, that would appear to be a real lawyer who is a partner is a real law firm.