This immediately hit my brain's bayesian classifier like a ton of bricks. Or as the saying goes, "If spammers ever learn proper English, god help us all."
* the English is actually proper, but the wording is unusual
tldr: you have a lower number of leads but a higher conversion rate from those that do respond.
That said, spammers and phishers are getting better and better. I've seen some "Apple" emails that looked almost quasi-legit to my weary eyes at 2am, say, but which revealed themselves as laughably bad upon closer inspection of the writing and the email addresses.
We should assume that phishing attempts will continue to improve in writing quality, use of plausible email addresses, and mimicry of email templates from legitimate sources. But some things will never change, because they are fundamental to the phishing playbook: seeking credentials, linking, etc.