Is there a logical reason for this?

Just moved into a new house. Dining room has 6 recessed lights and a blank plate over a ceiling box in the center of the room. Two light switches (pictured) - left side is for the recessed lights, right side I assumed was for the ceiling box. Yesterday, I went to install a chandelier and there is only a single blue wire inside the ceiling box. Took off the plate covering the light switches and this is how it's wired.

I assume the right thing to do would just be to take the one hot wire and run a pigtail to each switch, then run a new 12/2 wire from the right-side switch up to the ceiling box. But since this is newish wiring and seems as if it was done on purpose, I want to check and see if there's any reason someone would have wired the ceiling box this way before replacing the blue with a new 12/2 wire.

Just moved into a new house. Dining room has 6 recessed lights and a blank plate over a ceiling box in the center of the room. Two light switches (pictured) - left side is for the recessed lights, right side I assumed was for the ceiling box. Yesterday, I went to install a chandelier and there is only a single blue wire inside the ceiling box. Took off the plate covering the light switches and this is how it's wired.

I assume the right thing to do would just be to take the one hot wire and run a pigtail to each switch, then run a new 12/2 wire from the right-side switch up to the ceiling box. But since this is newish wiring and seems as if it was done on purpose, I want to check and see if there's any reason someone would have wired the ceiling box this way before replacing the blue with a new 12/2 wire.