You may not like it, but that's irrelevant. Fact is, we ARE getting some of the most courageous, hardy and motivated fighters available in the entire subcontinent - and arguably the very best of the best for LOC & LAC type terrain/climate.
People can complain against the Martial Race Theory all they want, but it wasn't completely without basis.
This is a really really dumb can of worms to open. Indian history under the British is filled with native collaborators across the Subcontinent. The less said about it, the better.
Quite a few of our people across various branches of service and strata of society are bikau as well. Some get sold for nice bottles of scotch, others spill classified info or betray the country over a piece of p*ssy (the most pathetic ones don't even get laid, they just give everything away in exchange for some sex chats w/ fake Paki accounts)
If one were smart, they would realize that this is actually a two way street; what makes you think India can't infiltrate Nepal and Nepalese society through these ties/engagements? If anything, recruitment of Gurkhas should be expanded, and India needs to more aggressively infiltrate Nepal to exercise control over it in view of Chinese attempts, and pull certain levers of influence like shared religion (Nepalese Royal Family have close ties with Yogi Adityanath's Gorakhnath Math)