I understand that regular e-mail scams are dumb on purpose, to filter out smart people and make the processing of the replies easier.
But phishing is based on tricking people into thinking their bank (for instance) is talking to them. Yet almost every phishing e-mail I've ever seen is always visibly fake and poorly made. Why don't they just copy the bank's existing email/website template?
The accepted answer here mentions that
In phishing, as in scams, sending the initial batch of emails is the easy part. The hard part is coaxing information out of the target (which can require a concerted exchange of emails).
But why? Isn't phishing specifically about obtaining credentials? Why would that require a manual exchange of emails?