If a new member posts more, will he get privileges faster ?
For example, is it possible to reach Senior Member or Hero status in 1 week?
You asked for the "fastest way", and the fastest, no doubt is by donating BTC.
If you want some fast privileges, then you should make your donation to the forum. If not, then just work hard (really hard) and never ask about merit, ranking or such a kind of stuff, instead read, learn and be patient!