Polarizing?
Maybe it's the anonymous Internet, or the callous nature of 'social' discourse.
Japanese components on a classic vintage Italian frame?
531 or SLX?
Helmets or None?
Wear a replica TdF Yellow Jersey on a group ride?
CF, or Ti, or Steel - which makes into best bikes?
Wool or synthetic?
etc.
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Vintage, modern, e-road. It is a big cycling universe.