I would like to know where you think you gathered this information from.
My suggestion is to find a new source quickly.
As far as Hydrofarms, it is the same thermostat that Zoomed sells so your thought process there is off too.
FloridaAlicat you can get off a lot cheaper with THG tape and a good stat.
I am using a Helix on my tall rack, I have VEs on my other 3 racks and incubator, and hydrofarms on my hatchling and QT racks.
What ever you use for an UTH source you want to make sure its regulated.
You could also use back heat also.