I's not the technology itself that they object to --- it's the fact that it is being used (patents, DMCA, etc.) to rape them on repairs.
So, even if computers in and of themselves are completely valid in such product categories saying "No Tech" (which means "no computers") is a great way to market to people who really just want to avoid anti-ownership anti-features.
Lastly, I find it mildly amusing that a tractor (which is very clearly a form of technology, in the traditional definition of the word where fire and printing presses are technology too) is now being marketed as having no technology.
It's just plain old vendor lock-in practiced forever and it's a market (or regulation) problem, not a technology one. I haven't yet seen a case where the lock-in was kept secret in the long run, you always have a clear signal that business practices of this particular company are user-hostile. There's nothing special about computers here either, you can always clearly tell that the company turns into shit. When a company starts doing something like this, stop trusting it. Or don't.