Israel has bombed all those things.
Your statement of Amalek is disingenuous. Netanyahu would not say anything that does not have plausible deniability. I think it is important to look at how his words were interpreted. Shortly afterwards there were at least two clips (one of which was use by south Africa in their ICJ deposition ) of Israeli soldiers (lots of them!) going to Gaza singing about destroying the seed of Amalek and "there are no uninvolved civilians".
The thing about genocidal statements is that most people committing genocide are not at outspoken av Gallant and Ben-Gvir.
You say the chants occurred “shortly afterwards”, but wasn’t that in December? Whereas the speech you’re drawing a connection to was in October.
If we’re going to accuse people of the most heinous crimes, we should have much more solid evidence.
There is about a month between the letter and the video clip being published, a little more from the speech. Someone even took the time to write a song.
Smotrich also invoked amalek, but he continued with "what Rafah needs is complete destruction". It is very clear what he meant.
"Remember what amalek did to you" is about remembering evil. The same statement appears at Yad Vashem, for example, yet no one has accused the Holocaust museum of calling for a genocide of the German people.