CMV: Growth is no longer hack-able

Time when growth could be 'hacked' is fading.
You hear stories only to find out that such method is either widely known or no longer viable. Many social platforms like reddit are quickly evolving into 'free' self-promote platforms. People are starting to catch up to it.

Does it mean that spending ad money will become the only viable way of growth? No. There will always be opportunities to grow without having to spend money. But it means that with growing competition, time and effort required will exponentially increase to grow your app via engagement or increasing presence online; only the best writers and most intriguing apps will grab attention.

What is your view on growth hacking in the future?