Glad to see you finally figured out that it was an obvious example of something that gets ATTENTION.  Nothing more, nothing less.  But sometimes it takes a painfully obvious example for people to see clearly.

And now you're just being silly with the "stand up at home" quibble.  That's just stupid, but you know that of course.

So you stand for guests that enter your home (as do I).  That's good, because that's standard societal protocol.  To NOT do so would be disrespectful.  The situation for the national anthem is exactly the same.  Get it now?

As for the wholly unrelated stuff in your last paragraph, I'll bite.  Of course what Trump said about McCain (for instance) was more disrespectful. Duh.  It's also irrelevant to the issue of players disrespectfully taking a knee during the national anthem.  This isn't a "which is more disrespectful" game, it's simply establishing that refusing to stand when present for the national anthem IS disrespectful.