the problems i allude to involve the steel no longer being steel within a very short time after hitting the water. As with the wiki reference, stuff you're expecting to pin together with steel will likely not stay together.
It's not pessimism to say "this could be done better; we've seen the methods being used fail repeatedly before"
Presumably they don’t have to be around for too long though as they will be replaced by coral once their job is done?
Your comment did seem needlessly pessimistic to me, and was absent any specialist knowledge of the engineering involved in this project that might have justified it.
Could they be made from under spec for other applications steel?
There's not yet an awesome-coral restoration markdown README.md; or any mentions of both "MARRS" and "Reef Cubes".
Do coral prefer steel to other materials like concrete, sargassumcrete, hempcrete, sugarcrete, formed CO2, or IDK cellulose; and can you just add iron to the mix or what do coral prefer?
Can RUVs and robots deploy coral scaffolding safely at scale underwater?
It's not pessimism to say "this could be done better; we've seen the methods being used fail repeatedly before"