This personal preference should have been communicated right after the first contact and before going on the first date, polite and firmly. That way nobody's time would have been wasted.
It's something I would do these days, given the current industry obsession with these weird rituals. A simple pragmatic and a [constructive] dialog about the needs of the company, my skills and whether there is a potential mutual interest - yes, white board coding, puzzle questions, technical interviews and take home tests - no. Whoever is not okay with this arrangement may move along.
All good jobs that I had were offered without technical tests and they came with nice and smart people. Every time there was some technical grilling involved, the people were arrogant and condescending, and I wouldn't have wanted to work with them anyway.
And anyway, this form of hiring protocol mostly seems to be practiced in the US job market, as well as by those countries trying to closely mimic their US counterparts. I've noticed that phenomenon in Eastern Europeans too. The Western European companies have massively different hiring practices.
For one thing the author is right. These broken hiring techniques force people to leave the mundane job market as quickly as possible, switching to looking for work through other channels. Perhaps this situation contributes to the visible lack of talent that some are observing. Apparently, the talent prefers a more personal and a more civilized approach that the generic job market is not offering.