Building multi-decade service life infrastructure on the coast in this era of the Anthropocene actually requires you (from an engineering point of view, not merely a regulatory one) to have a buffer zone of wetlands, marshes and sea walls to absorb storm surges.
You can still choose to read that cynically, but I think the cynical angle is taking moral ecological credit for a pragmatic engineering reality :P
A single Starship launch produces motorcycle (100dB) to permanent hearing loss + immediate pain (140dB) sound out to about 7 miles.
Having that intermittently a couple times per day I think will be very disruptive.