Apart from the obvious questions such as "What does owning an NFT associated with a tweet actually mean?" an interesting aspect of this is: Is Jack Dorsey selling this tweet as CEO of twitter. Does he own it because he's the CEO of twitter and twitter owns the tweet, or does he own it because he wrote the tweet. If he owns it because he wrote it then does that mean I can sell my tweets? If he owns it because he's CEO of twitter does that mean twitter is selling it and it'll be listed on their accounts?
Also, the top bid is by Justin Sun at $2m, a man who from what I can gather is more famous as a "Tech entrepeneur" brand than for anything he's actually done. Also famous for bidding $4.5m for lunch with Warren Buffet.... and then failed to pay up.
Frankly, he looks like a great poster child for this transparent pump and dump.