Switch on Audio Output

I'm planning to build the CMoy Headphone amplifier, specifically the version found on the JDS Labs website because they have a nice PCB. In their Bill of Materials, they recommend a 3.5mm stereo output jack with a dpdt switch built in. I plan to use headphones with a 1/4" jack, so I'd like to build that into my project. The only reason I can think of to include an automatic switch on the output jack is to prevent pops/clicks in the headphones while they are being plugged in (TRS jacks short during the insert process).

https://www.electro-tech-online.com/custompdfs/2013/01/cMoyBBx203R_Schematic.pdf

The other thing to note is that in the original schematic, this switch isn't included.

Is there any reason I can't just short out the switch and solder a panel-mount TRS 1/4" Jack to the case?

Those two switches are not related to the output jack, rather it is a separate switch used for the bass boost function. If you don't want it, just place a jumper instead of RB_L and RB_B.