The efficiency of roof ventilation varies from one geographical location to another.
What is required in the south will be different to the north.
Having said that it makes no difference as to what type of roof vent you have as long as it performs according to your requirements.
All vents, roof or otherwise, are constructed with varying discharge or resistance values so asking for a ridge vent means nothing unless you state flow values.
Now let’s be quite clear here, one who installs is not one who designs otherwise we may as well go to a butcher when seeking advice about surgery.
Performance is the key prerequisite, which is determined by the expectations of the home owner and the roofer is not equipped to ascertain what is required, not unless he/she happens to be a fluid mechanics engineer who is moonlighting as a roofer.
The claim,‘I’ve installed thousands of these,’ is not a testament to performance, and whether they met expectations is another matter.