I think the only good we should do for newbies in this thread is letting them know that Bitcoin is the best investment and other coins are shitcoins, and please no one should try to lead people into investment on shitcoins there's a lot of people that has lost there money investing on shitcoins.
I would say I agree with most of your points except this
Bitcoin is the best investment in cryptocurrency for its safety and returns
Because it's the only 'true' cryptocurrency.
But as the best investment is subjective
Everything boils down to the requirements and knowledge of the investor
Currently it's my best investment keeping family constant
Because I value safety, security, a future and potential
There are people out there that would think otherwise
So using one of the best investment is better since its open ended.
Like you said
Newbies need stability
And Bitcoin is the best stability you can get online.