Smites: should I read “melee weapon attack” as “with a melee weapon in melee or thrown”?

Jeremy Crawford answers burning D&D questions | 2021

Does Uncanny Dodge work against each successful attack made by opponent who has multiple attacks or is it one attack

The Horn of Valhalla summons Beserkers However, as the text describes them as spirits, could/should they be treated as Undead?

When a D&D rule uses the word “can” it means you are able to do the thing

A monk using a monk weapon with Dex is somehow mechanically different from him using a finesse weapon? How?