Another reason why some( may be not all) Nepalese people dislike "Hindian rooted people" bacause they never embrace or fully tried to appreciate Nepali culture,language and belifs.It seems that this thread inventer gave pretty much candid descriptions.he said that he speak God-damn Hindi language even though he should be speaking "Maithili"( i suppose, which is very different than hindi and  is their mother tongue) and moreover,he probably never tried to speak Nepali language properly with his friends and families.Probably he hates "Nepali posakh and dhaka topi" but love to wear "Dhoti" and funny looking Indian white topi, a resemblance of Dhaka Topi.He may love "Dewali and other Indian festival"  rather than "Dashain and Tihar". Perhaps,he is fond of Indi T.V. channel and serials and  may never watched Nepali serial and/or News etc. He also mentioned about some Spanish people here in USA.They have the similar problem.They discourse in Freakin Spanish language instead of English.They don't even attempt to speak in english.discuss matters loudly in  an annoying manner with some kind of  funny accent. People like me, who are not native to this nation, are upset of this spanish drama;you can only imagine, how the english speaking americans feel about them.This is one reason that ; why majority of Americans show animosity towards spanish population both legal or illigal.They failed to embrace, respect and  mingle with the people,language and culture of this host nation. Because of this, English speaking population wildly assumes and behaves them as foreigners/illigals and discriminates in some cases even though, they are Legal American citizens.In nepal we have similar situation.They failed to embrace and mingle with the majority of population. Until recently because of education and other opportunities many migrated in cities,like kathmandu,pokhara,lalitpur and so on, and slowly intermingling. there will be some "culture clash" situation and we will get to read/listen many stories like the one posted in thread above.
 
Another thing that people call you "madhesiiiiz" ---because you guys are from Madesh pradesh,"Dhotiiiz"--because you wear them,and people didn't have other name to identify them  in the past so, they chose "Dhoti lagako manchhe" (i guess) and abbreviated as "Dhoti" later on---So there's no need to feel shame for those name. There are similar name for people from  every other castes.....................