At risk of sounding unlike the card-carrying libtard snowflake I truly am, all the hand-wringing about inclusivity for e-bikes, etc feels off to me. The outdoors, even nicely graded trails, is not inherently inclusive, and some trails or trail features are simply unsuited to some people.
If I'm understanding correctly, this is private property, the landowner seems to have graciously allowed some trail users and wishes to exclude others (motorbikes), and livestock.
Kissing gates always feel like the most bike-friendly solution to me. Pop up on the back wheel, push in, swing the gate, back out. Not perfect, and if you have a bike with gear on it you may have problems, but per above - this doesn't feel to me like a situation that requires solving for every possible bicycle use case.
