We don't need to rush things in order to accommodate a "mainstream demand" which simply doesn't exist, otherwise BCash would have full blocks as well Bitcoin itself. Censorship resistant and robust of the system > rushing things scaling wise.
If you want to help learn to code and drop good BIPs, get nodes running etc.
This has been the oft repeated reality, and one I understood only after many months of using Bitcoin - there is always going to be a need to scale, but the network is far from reaching its capacity with real-world use. Even so, with everything slotted for upgrades, bitcoin's well equipped to handle spurts of growth when it does eventually happen.
As the cypherhunk manifesto says, yes, learn to code... I'm embarrassed that I don't and cannot contribute in this way, but I'd like to think that using bitcoin - paying things with it, accepting payments for it, sending it to people for their very first coins... these also help in small ways. Encourage people to consider using Bitcoin, the way you were encouraged.