I don't think that this will work, namecheap is not known to respond on such reports and even if the website is proven to be a scam they won't do any action to it since from what I see they only see the profit in each transaction they are doing with these criminals. I forgot about the name of the domain hoster that can successfully take down a scam website but one thing is for sure it is not namecheap that is why the most effective way of avoiding this website is making it known the the public and hope that the public will spread the awareness to others.
So it's true that Harlot said we have to introduce a lot to the public and tell beginners to stay alert for phishing scams like this, so the OP is good at catching and revealing about Trezor which many scamers target.
Nope even if you spam them with the same report it won't be taken down, how do I know? I just visited one of the urls given by the OP and the site is still up and running meaning namecheap didn't respond to any of your reports and it just confirms that they actually don't care about whether the site owner is a scammer or not. Maybe this is one of the main reasons why namecheap is the preferred domain hoster for criminals since aside from it being cheap you won't expect namecheap to have some kind of action against them.