Those tweets are from the very earliest days of 5e, when it was still finding its feet and are, like a great many tweets and rulings from those days, not generally considered relevant or accurate.
Aside from that, Crawford's sage advice tweets are not considered official rulings and have been declared formally against being taken as such, for precisely the reason that whenever he gives out an answer that says more than just referencing the relevant rule verbatim, he often adjudicates it incorrectly or unclearly.
As with all things, players and DMs are free to houserule things in whatever way feels like it makes the most sense or is the most fun for them, however, by RAW, my description is 100% accurate, and I would move strongly that it is correct RAI as well, given the way in which the spell has historically been used within the realms lore (most markedly by drow assassins).
