How many are using the factory amp meter

amp meter is being used in my 66 Valiant, but from what I have learned here in the last few years from members everything above in this post made me concerned as well.
So my bulk head has been serviced and cleaned and one other thing ..I will not ever be putting a big/larger amp Alternator on my engine or be doing any big amp draw things like fans and bid stereo systems with out using a relay system, I think this is just another reason why this has been a hazard