Re: eXch - instant exchange BTC / LN / XMR / LTC / ETH / ERC20
Not at all - if you check some mixers who had/have vanity generated addresses, they were/are targeted even more with vanity-generated phishing. Phishing by typosquatting is something much more effective than email spam nowadays.
I never said it's impossible, it's just harder for them to do it 
Recent examples with Privnote and phishing Pirvnote scam website showed me that people don't even notice some obvious differences.
In the meantime, it looks like eXch is under DDoS attack
It's back and working fine fine for me, but I would always suggest checking out and using eXch official onion link, this is harder to DDOS attack and it is better for privacy.Better to bookmark onion link in Tor browser to avoid phishing attacks.