Yea, I don't think people are embedding tweets on their sites to do Twitter a favour ... it's because they want to reference something and part of the TOS says to use it.
The TOS on quoting someone? You're saying that if I want to quote something someone says on Twitter in my book or in a newspaper, I have to follow their TOS and style it their way? No, I think not. Applying Twitter's styling to quotes is a nicety. It's nice for the blogger that it looks good on a blog and it's nice for Twitter that they get a link back and their branding guidelines get followed, but there's no way Twitter is going to be able to enforce their TOS on quoting something that someone else said just because it was said on their platform.
You rightly point out the ridiculous claim, noting people don't use embeds as a favour to twitter - and then make the ten times more ridiculous claim that people are using embeds because of the TOS.
At least try and hide the fact you're being bad faith if you're going to engage like this.