This should create a lot of comments.

"The -700 was certified using reverse thrust for landing. SWA uses an
on board performance computer (opc) to calculate T.O. and landing data.
From the F.O.M.;

"The opc on the 700 takes into account the thrust reverser's for
landing,certificated that way, unlike most other aircraft."

It's true the classic fleet (and every other a/c I'm aware of)
considers reverse thrust for landing simply a bonus. Not the -700.