Fanboy
Noun · Hacker Culture
Definitions
A slang term for someone who shows intense, often uncritical enthusiasm for a brand, platform, company, or technology. In tech culture it is usually used pejoratively when loyalty seems to outweigh evidence or nuance.
In plain English: Someone with intense and often uncritical loyalty to a brand or technology.
Example: "The discussion was impossible to keep grounded because every benchmark turned into a brand war between fanboys of different hardware ecosystems."