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Yeah, Ive flown Yeti, Tarah, and Bhudda air, and there's no real difference despite the ads, all the planes are a few flights from the junkyards
Last spring I was visiting family in the Terai and when I flew back to KTM the plane had a partially busted door, and mosquitos got in and mobbed everyone for the entire flight, also because there's no jetbridge.
Anyone know what they were flying? >

ATR-72 >

Part of that seems to be that it's a low cost regional plane operated by a lot of small regional airlines. Perfectly good planes can become death traps when poorly maintained, and small regional airlines in far flung parts of the world can have shocking maintenance standards.
It's hard to know without analysis done, but I suspect this is going to come down to maintenance. >

And may be flying into more difficult airstrips due to the airline size as well. Not sure how this exact one in Nepal is, but some of them are pretty extreme. >

Nepal has a few high altitude airports that can be considered dangerous because of hills surrounding. However, this flight was from Kathmandu to Pokhara, a relatively safer route. 
Considering that the captain(pilot) had 20+ years of experience, a recording shows what seem to be stalling and spiraling left side- this likely was equipment failure >

If a redditor spot bots, then why does reddit itself not spot and deal with them immediately? >

I'm from Nepal and let me tell you, All these domestic airlines buy planes on auctions that are literally on their way to boneyard. No amount of maintenance is keeping these trash cans from breaking down at some point. This is all down to the government for allowing these airlines to fly out of commissioned planes and the airlines for implementing shortcuts in maintenance and repairs.