Actually, I just did a quick Google search and found the reference - it was an Amazon review that mentioned it:
"With the help of a previous post I was able to fit this (Curt 11396) on my 2019 Nissan Leaf. Bought 2 bolts (M12-1.25 thread pitch x 35mm length) that normally come on the older models but not on the new body style Leaf. There is some drilling required but I just followed the instructions and it worked great"
A reddit poster (maybe the same person, LOL) mentioned:
"Well just finished the install, it’s the same for the 2011-2017 leaf, the Curt 11396 works fine. One difference from the instructions: my 2018 leaf did not have the rear tie down bracket/ tow hook installed, therefore there were no bolts there to be reused. I had to buy 2x M12x1.25 ( fine thread) at least 30mm long to install the passenger side of the hitch."
So it definitely sounds doable.
There are plenty of bike racks that mount to a 1-1/4" hitch receiver, just one example:
Vancouver, CA owner of a 2013 Ocean Blue SV + QC, purchased 01/2017 in WA
Zencar 12/20/24/30A L1/L2 portable EVSE
1-1/4" Curt #11396 hitch
After market, DIY LED DRLs
LeafSpy Pro + Konnwei KW902 ELM327 BT OBDII dongle
Loving my first BEV