Newps wrote:

Not aggressive at all and a good idea.

NO, it is not a good idea. Read the AIM.

He says he was vectored to intercept the localizer. That means new
heading or not, he is to intercept the localizer. I don't see what
the problem is. If he doesn't intercept, he is not in compliance with
his clearance. Period. That's why he was told the purpose of the
vector.

If he weere given a vector and not told to intercept, then a question
might be in order as the aircraft aproaches the course as to whether
the controller wants him to intercept or pass thru (not unusual)