I recently carried my heavy e-bike and my wife's much lighter hybrid on a Thule platform rack with 1.25" receiver. No trouble at all. Before that I carried the same e-bike (alone) on the same rack same vehicle, for a 400+ mile road trip again with no issues. I would really be more comfortable with a platform style of rack. 1-UP racks are awesome but expensive. My Thule one is a POS but it's what I have.

One thing I do when carrying my e-bike is to remove as much weight as possible, including the battery and any rack bags, trunk bags, etc. Doing that gets the bike down into the 40-lb range and makes it more manageable to get on and off the rack.