From their website the rack you mentioned = Capacity: Two Bikes (Max. 50 lbs per bike).
I think you'll find even carrying one ebike is a testy issue, as even with the hitch tightener (i've owned a couple) they get to rockin and rollin which means trouble. I developed carrier weld cracks within a year and immediately switched to Kuatt.
However as you also mentioned they have this carrier which is 64lbs/bike =
TRS E-Bike Hitch Rack
The new TRS E-Bike hitch bike rack will carry two 65 lb. bikes with up to 4.5" tires. It uses our new quick release spring system to tilt the rack down and fold it up flat against the car. The two bikes sit on anodized aluminum trays with a rotating tire cage and multiple ratcheting wheel straps integrated. The trays are supported by an additional frame structure to withhold the weight of the heavier bikes. A uniquely designed hook is used to hold the bikes by the front tire. Max wheelbase is 48". The TRS E-Bike Hitch Rack is for 2" hitches only and includes locking hitch pin and cable.
If you want to play with these heavy bikes and travel with them you will pretty much need a 2" receiver hitch and a carrier rated for the intended weight... don't take chances with your pricey toys, it will come back and bite you, or the person following behind your vehicle when things come from apart.