It's a lovely idea, but no it won't work. Even if all the members on this forum decided to purchase some BTC on 30/01 it would not affect the price, in fact, it would barely scratch the surface and as someone mentioned earlier the whales would just find a way to spoil the party.
Even if people follows this i doubt some or many will just take advantage of the price, remember not all bitcoin holders are on this forum and they could make the market down instead. Let just bitcoin be and the investors be as the market is kind of untrusted right now and putting money is just a waste. Many have lost and if they see the price is increasing they might take that opportunity to gain back. it's a big NO for me.
What a stupid idea ,since when that putting money on crypto is just a waste?if we dont help the market grow then who will do this for us?since it came out of your mouth that investors doesnt only from this forum how can they help us?this market grows by demand so lets buy coins to improve the market progression today and tomorrow