So if we go with your logic Aravali shouldn't have been extended. Jaipur alone was enough to make it full still it got extended because parking problem is real bro. Don't tell that Jaipur has Gangaur too jaipur ears 10x than Bikaner still they extended not only Aravali but marusagar Dayodya and many more trains in the past and they are willing to extend many trains including 17019 20 when the occupancy of this train is 140%. And they extended JP MMCT duranto because of same problem.
Railway works with logic and politics bro not with mere emotions that particular train is someone's private property. Trains you are telling parked at different stations would have got extended too had there been...
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any nearby stations to accommodate those trains SGNR is full and Hisar is in the same directions for most of those.
HMH washing line got sanctioned because of some reasons and if you think it's only because of politics then extention of train is not a big thing for the politicians.

Hanumangarh washing line there is no politics? 😂😂😂😂😂 Bro only because of politics it got Clarence. Railway board itself ask NWR to sent the proposal let me tell you (NWR GM himself said no to local people in annual inspection last year when they demanded washing line)
And for your kind information let me tell you trains which got extention from Bikaner Jodhpur and ajmer
Bikaner
Bikaner...
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Kochuveli to Ganganagar
Bikaner Nanded to Ganganagar
Bikaner secunderabad to hisar
Bikaner Coimbatore to Hisar
Jodhpur
Jodhpur Haridwar to Barmer (later it got extention upto Rishikesh)
Jodhpur Jammu upto Ahmedabad
(Jodhpur division sent proposal for the extention of Jodhpur puri, BGkT Manarguddi upto Barmer in 2021 but it got rejected because of operational issues)
Ajmer
Ajmer haridwar/Rishikesh upto Udaipur
Ajmer Jalpaiguri upto Udaipur
Ajmer division introduced many new trains from Udaipur and many trains will get extention from Ahmedabad when himmatnagar Guage conversation gets started.

And last but not the least MP from Bikaner himself demanded the extention of Ranakpur upto Kalka but got rejected because of maintenance issues so there is no issue with that.

Bro when did I say that there is maintenance issue in Jaipur? I said there is rake stabling and there is platform availability issue is in jaipur and its very much true. Forget about poll I sincerely invite you to come to jaipur on any public holiday and we will togather see the situation.
Secondly no division wants to hold train to their Divisional HQ only, there are multiple issues because of that they can't extend evey train, slot unavailability in pit line , not enough lie over are few of those. Rajasthan is a big state SGNR and Hisar for eg are around 300 km away from Bikaner so lie over has to be more than 20 hours in order...
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to extend and maintain the train to those stations from Bikaner. Hanumangarh is 220 km from Bikaner atleast 5 trains are there which could be extended upto Hanumangarh from Bikaner and atleast 3 will get extention from Bikaner. Ranakpur is one of those.