How can Bitcoin grow if new users are not allowed to join this crowded bus, my logic is powerless to find an answer. Who can?
You are believing a shitload of propaganda, if for some reason you are buying into the idea that the bitcoin bus is full.
That's totally nonsense. One thing is if you want to buy coffee with it and you expect total resolution of transactions in seconds (which bitcoin is not there yet), but another thing is if you want to store your value securely and to use bitcoin for it's best features - value security.
In any event, there's all kinds of room for you, your friends and a multitude magnitude of others to jump on board with either today's current capacity and/or with various ongoing developments that will allow even more peeps to jump on board and to increase various kinds of quicker transactions.... .
Wait for it... wait for it.
https://blog.coinbase.com/2015/11/20/introducing-the-shift-card/Now where have you been exactly?

your argument isnt valid with your wall of text.
Please do some homework, before making a debate on transactions. I would agree with your small minor problem if this was still 2014 or something, but its changed since then.
Your link does not provide any meaningful rebuttal of the claim(s) of my earlier post.
I don't claim to be all knowing; however, I do understand that someone claiming there to be a problem has the burden to show such problem, and the burden is not on me to establish that such a problem does not exist... hello? you seem to be assuming a problem rather than showing any kind of meaningful evidence of such.
In fact, there is no real meaningful evidence that blockchain fullness is causing any kind of meaningful problem for bitcoin or emergency instability situation, beyond a bunch of XT/Classic supporters screaming in disproportionate and frequently either irrational or ill-informed ways to exaggerate such a supposed problem.
So, yep, I am talking currently, and not about some bitcoin 2014 status.. in spite of your non-evidentiary assertions.