It's impossible to have everyone arrive at 60 days out online as well. Some people don't have access, some people don't have the knowledge, some people don't have plans that far out, and sometimes Disney's site just prohibits everyone from arriving online 60 days in advance

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Arriving at rope drop is less prohibitive IMO. Access is there for the taking at no extra cost (like Internet or a computer), arriving somewhere at opening for best results is common knowledge for almost everything compared to knowing to get online 60 days before your arrival, if people have plans to go to Disney most have it figured out by 9 that morning certainly more than know 60 days out, and even the tapstiles are more reliable than Disney's site. The only real barrier to arriving at rope drop is people's willingness to do so.
Everyone has always had the chance to be at park opening. The system was not unfair. FP+ just benefits Disney more, that's why it exists.