I think these so called incels needs counselling, they have a very low self esteem to percieve that the society or any one is denying or even owing them sex! Its kinda absurd and weird to conceive such a thought , let alone getting followership based on such sentiments...!
I know, it's so absurd. Unfortunately, it is one of the consequences of the internet, I suppose :(
Yeah , its a known fact that the internet is filled with both the good, the bad and of course the ugly. Every internet user makes his or her choice of content from the net based on his /her inate desires ... However , I honestly think and hope there could be a way of dissuading these incels from this their absurd ideology before they metamorphose into full time terrorism as their frustrations shall definitely lead to depression , self hate and then full blown voilence to the society (humanity) whom they ostensibly blames for virtually everything that seemed wrong in their views.
The authorities and every positive minded user of the internet has a role to play in this regards to make our world a better place.