Pilot conducting a VOR 18 approach at night to TUP reported bright white lights to the left of the runway could be confused with PAPI lights and give a pilot a false glideslope indication.

Narrative

Approaching TUP via the VOR 18 approach during night VMC. Good comms with ATC and Center. Ceiling and visibility good; clear night with moderately strong headwind. No factor. While approaching TUP via this approach; the PAPI lights are on the RIGHT side of the runway. I knew this from route study and the appropriate airport charts. However; this approach has you coming in from the left at an angle. From this angle; there is a set of VERY bright; horizontal white lights that look EXTREMELY similar to the visual indications you would get from the PAPI system. These bright white lights are located on the LEFT side of the runway. This has the potential to create an EXTREMELY dangerous and possibly deadly situation. A task-saturated pilot or inexperienced pilot may target fixate on these white lights on the LEFT side of the runway; unknowingly mistaking them for the PAPI lights. In this case; the 'four white' would indicate being higher than glideslope; causing the pilot to descend. If circumstances aligned and the pilot did not catch this mistake in time; it could easily lead into a Controlled Flight into Terrain situation. This happened in Night VMC; with good view of the ground. It was very jarring to see; but I recognized the situation before any dangerous circumstances happened. I am making this report out of concern for others who may not immediately recognize the situation. I can only imagine how the situation may have been worsened by poor weather conditions; lower ceiling/vis; or lack of experience/situational awareness due to pilot fatigue.