First of all, I would tend to agree with Thiels general premise that there isn't enough sex/eros/sensuality in the tech-camp, even with so-called "high-functioning" nerds and successful techies. But I wouldn't see this as a tech problem rather than a problem of modern society in general, creeping up on all of us, not just the nerds. It's only us getting there quicker.
I see a lot of factors playing into this. The modern day phenomenon that Houellebecq describes as the "Extension of the Combat Zone" would be one key element. Long story short, the art of formalised courting in modern society has been lost. Especially in the US where men are generally always with one foot in jail for sexual harasment and general prudishness puts anything remotely erotic directly into a negative spotlight. But in other parts of the world too. Through a cultural degeneration of sorts and the sexual revolution of the 60ies we have lost a natural connection to our sexuality. Areas in which a formalised and thus safe encounter between men and women can happen have just about vanished. ... I personally dance argentine Tango and in it have found one of those rare spaces where this formalised encounter still exists - something that changed my (sex)life as a nerd/geek and the perception and valuation of myself and women in most profound ways (I'm a straight male if you haven't guessed yet ...).
Sex and intimacy is - in modern society more than at any other time - a form of art that needs to be practiced and refined. At the same time chances and times to do exactly this have just about disappeared in society. Nobody feels this more intensely than the superficially 'insecure' nerd (male and female).
What I find fascinating is that the problems that were wide and far between and limited to some awkward types (us outsiders) back in the 80ies have become personality traits observable in wide swaths of younger generations today. Herbivore (wo)men, Hikikomori, Escapism and Facebook/Instagram Depression/Disorder have become widespread phenomenon throughout society, making the problem more and more palpable for the general population today.
Curiously, this is the *only* place where I see some strange sort of an actual advantage in strange and bizar abrahamian revelation cults (i.e. Christianity, Islam and Judaism) today. While these cults are basically nothing than twisted remniscents of wacky ancient beliefs and traditions, their moderate 'modern' variants do actually still see to it that each and everyone has a real chance of finding a mate. Not a bad operating system for a society and one that give these cults somewhat of an unsettling evolutionary edge - they produce more children.
Generally I suspect this lack of sex, intimacy and sensuality thing will continue to spread throughout large areas of modern society until we come up with some revitalised form of courting and finally replace ugly sexual repurcussions, eccess escapism and ancient cults with something more modern and sophisticated and get around to real social interaction more. Todays "Cuddle-parties" and celebration of sexuality itself as something of religious quality in New Age "Tantra" and such hint in this direction. But I do also fear there will be a huge setback through VR and stuff like that before anything sustainably positive happens in this field though.
My 2 cents.