Indeed. Although Texas is not a primary launch site long term. It’s a development site. The Cape is going to be a primary, with multiple Starship-capable pads.
Yes, but even the Cape has lots of people living within sound range. I am not trying to stir the pot, it depends on the wind, etc. But, if we will see hundreds or even thousands of Starship launches per year, it's hard not imagine a system of methane and oxygen pipelines running out to offshore platforms being required.
Ideally, those platforms would be located somewhere without much sea life. Though that's utter speculation, because I have no idea how well air pressure shock waves transfer to under the sea.