The price of bitcoin is getting higher and higher and that makes it really difficult to earn that huge amount in one month's time as with increase in price the payouts are also being reduced so even if you work on multiple projects still you will get paid very less amount of bitcoins so earning 1 btc will surely take a very long time.
Maybe you are wrong. Every project keeps paying the same amount, even more.
Because bitcoin payments are not dependent on the rising price scale.
This will still depend on the minimum amount of payment rules in the form of bitcoin.
A small example is a campaign signature
Average amount of payment is
Rates
Jr Member-.002 / week
Member-.004 / week
Full member- .008 / week
Sr member- .016 / week
Hero + - .024 / week
And this keeps rolling even as bitcoin prices go up or down