If SGPC keep excluding many types of SIKHS, in favour of PURE SIKHS, then this religion is going to finish very soon.
As per my understanding Guru Nanak Dev ji professed acceptance of all good people irrespective of his/ her devotion/ appearance/ contribution as long as he is with truth and is genuine.
Which way you lead your life , does not really matter as long as you are helpful/ non-destructive/ non-intrusive or against socity norm ( like thieves).
Once again I would say, be inclusive. A less of a sikh would not mind if you keep thinking that you are better sikh than him as lng as you ALLOW him/her to remain as a sikh.
Problem is that nowadays everyone including religious leaders say " My way or highway".
That way only leads to neative groth of population numbers.
Atleast in this respect, we should follow muslims!. Increase your population.
It is not only SGPC it is all the sects and gurdwara committee's that want to accept only pure sikhs.When court case was fought SGPC this time made case quite weak and what happened sant samaj,DSGMC all started criticising SGPC for destroying the importance of kesh.
As far models of muslims is concerned forget about it.Muslims have large families sikhs have small families.Muslims have full faith in their traditional values sikhs on other hand are following western feminist liberal secular values.Muslim don't tolerate marriage of their women with non muslims here 100 of supporters of interfaith marriage of sikh women emerge.