I dont think this is true, I have many friends studying and investing in crypto right now and none of them seem to have even heard of this.

Registration still open for newbie? What do I need to do for signature campaign?

Although I have a very strong feeling that the current growth is a bubble effect, it seems to be only the beginning of the bubble.
The Bitcoin market cap is not even 1% of the world economy, meaning that there is still a lot of potential for growth.
I would suggest you buy a small amount, an amount which you can risk at this moment. Please do not put money from your college funds and other savings into cryptocurrencies its way to volatile and unstable for that large a risk.

Prices are rising like crazy because of the newcomers, the 'FOMO' effect at work.
People read all these articles and tweets about how BTC might reach 50k in 2018, they place bids at a 100-500$ above the going price because its important to get in now to reap gains later (at 50k), the price is being inflated by the people itself. This growth is unsustainable and might cause a crash in near future.

Having said that BTC (as well as some other coins) have very promising technology but are in a primitive stage and will be very valuable in the future, but currently all the common public sees is $$$.

Wait so what happens to the bitcoin in your steam wallet? Or do they convert it to $ when you transfer?

I am thinking of building a new PC for gaming and mining purposes, what GPU and specs would you guys suggest.