Towing trailer and glider with a honda civic

While I "typically agree", OEM limits are sometimes based more on "local sales laws" or "how likely do we think we will get sued?".

What may be fine in parts of the planet are banned in other parts of the planet, even if the basic hardware is the same.

As to the original question, well yes, this combination may be fine, but margins can be rather slim compared to other cars.

I have towed from a worn out '70's super beetle (with a huge plywood and steel trailer and a ASW-15 in it) to a mid sized motor home with a newer trailer and 15m ship.

Vehicle weight, the more the better.
Vehicle wheelbase, the more the better.
Trailer weight, the lower the better.
Tongue weight, small range of "OK".
Aero can make a difference, use the same trailer but on 2 similar vehicles but with different aero, some are great and some leave the trailer dancing at speed.

Road speed, hills, crosswinds and truck traffic can all make a difference.

Small cars with a AT and a heavy trailer, be mindful of trans fluid temps. Manual trans is a bit easier, all other things being the same.

When in doubt, slow the Frik down. If you lose it, damage is lessened, both the tow vehicle and the trailer.
Trailer damage is like aircraft damage, if you don't hurt it, you likely don't hurt peeps.