"To be a mass tourist, for me, is to become a pure late-date American: alien, ignorant, greedy for something you cannot ever have, disappointed in a way you can never admit. It is to spoil, by way of sheer ontology, the very unspoiledness you are there to experience. It is to impose yourself on places that in all noneconomic ways would be better, realer, without you. It is, in lines and gridlock and transaction after transaction, to confront a dimension of yourself that is as inescapable as it is painful: As a tourist, you become economically significant but existentially loathsome, an insect on a dead thing."
A similar phenomenon is happening in the outdoor industry. Instagram is (depending on your perspective) ruining everything or democratizing access to natural beauty. Most people I know practice some variant of a digital leave-no-trace rule: don't post photos in publicly-trafficked areas of the internet, or if you do then don't say where they were taken. It's not so much gatekeeping as ensuring people who want to experience that beauty have to put in the work - read terribly-designed websites, meet actual people and gain their trust, or even take a backcountry travel class which hopefully instills a healthy respect for the environment you're enjoying.
Another strategy is to delve further into mountaineering, where the obvious danger of the terrain repels everybody with a working survival instinct and ensures some degree of solitude :)