One of the issues with hate is that its cause is often a lack: of knowledge, of understanding, of self-confidence.
With a close friend of mine, we use in French the neologism "mal-computant" or malcomputant, to describe somebody with very low ability or confidence in computers/internet/geek culture, and who often hates "them all", generally with little knowledge on the topic ("I hate Facebook, I never had an account").
The prefix mal- means “bad,” “wrongful,” “ill” and is used in English for instance in malfunction, malcontent. The French term malvoyant means "lacking of the ability to see correctly". The English version points to "Low vision" which redirects to Visual Impairment. Since the -phobia suffix did not match well, I thus propose computer-impaired.
In a comment, technoluddite was proposed (from John ou Ned Ludd). However, the concept seems more akin to "a technologist that longs for a simpler life". Luddism, by itself, sometimes refers to people that opposes to novel technologies, or criticizes them. Some talk about neo-luddism. The OP does not seem to convey such an active meaning.
Upon comments again, referring to geek culture, rare occurrences of misogeekism or misonerdism exist. However, it is not clear whether it is a fear of nerds or geeks, or a fear of the geek-culture.
For the record, my initial proposals were:
Cyberphobic, from the second meaning of Cyberphobia (Wikipedia), since phobia may refer to hate or fear:
Cyberphobia is a concept introduced in 1985, described as a specific
phobia expressed as "an irrational fear of or aversion to computers"
or more generally, a fear and/or inability to learn about new
A related term is logizomechanophobia:
More than just sweating when needing to format an Excel spreadsheet,
people who have Logizomechanophobia won't go near anything digital.
Not computers, not ATM machines, not the kiosk at the airport - none
of it. It's often caused by a traumatic event caused by electronics.