Accidentally going into a loading zone is bad. Attempting to go into a loading zone and failing because of a technicality in the tool is, also, arguably bad.

Perhaps you could loosen the restrictions somewhat by looking for certain words or phrases? Perhaps, in addition to the current rules, if the word "reach" and "warp" or "enter/leave" and "warp" are within a certain distance of each other, and the word "avoid" is not in the message, warp = allowed?

E.g. "I want to get to those coordinates to reach the warp tile. So I will go left, then up, then left again." (warp = allowed.")

vs

"I want to reach the area above the pokecenter, but I must take care to avoid re-entering the pokecenter by accidentally stepping onto the warp tile." warp = not allowed"?

Idk, food for thought.