Yes and majority of time and expense that goes into building nuclear reactors is due to regulations, espeically NIMBY/fear based regulations. They have to hire teams of special lawyers for these and cases last years. That’s why when you see people describing the cost and time of building these, they always start at the planning stage which can include years of legal battles.
And these lawyers are usually nuclear engineers who went to law school afterwards, so they are pretty expensive to staff.