I did not read every post completely so if I missed something you'll have to forgive me.
Excessive ammonia does in fact inhibit the growth of our nitrite eaters.
Excessive ammonia is more importantly not going to help things really.
5 ppm for the start maintained until bacterial activity is seen, and 3 ppm maintained each day after activity is seen, will create a massive enough bio-filter to handle full stocking plus a bunch.
Maintaining not blindly dosing these levels is all that is needed.
Blindly dosing 5 ppm ammonia into a tank every day could put you well over 40 ppm before you see any bio-activity. that level will need to be dropped to around 3-4 ppm before the ntrite eaters will begin to thrive. this could take several extra days or even a week by using this method. The next issue is the amount of nitrite you have at the end. With normal maintenance dosing it usually takes at least a 90% water change to put nitrates back in check. With excessive ammonia you simply add more work because it will likely take two or three 90% water changes rather than 1 or 2. The work woud be worth it if the end result had some benefit, but in honesty it doesn't. either method will produce a massive bio-filter and allow you to stock fully all at once. So two possible methods, both with the same exact end result, and one is more work. more risk of problems, and more cost. That seems easy enough to me really.
There is a lot of confusion about fishless cycling, but honestly a little study into the why's more so than the hows and you'll clear up the confusion.
Start by reading Chris Cow's two original articles on Aquasource, He was the first to put fishless cycling into a hobbyits friendly method. Go from there with your research.
