How can an average person buy Bitcoin(/s) when the price reaches a newer level?
They'll simply buy smaller quantities. At some point, people will start moving the decimal place and thinking in terms of fractions of a bitcoin. People generally (unless they're rich) won't even think about buying whole bitcoins anymore. It'll be unattainable for the average person. Such is the nature of scarcity.
Many people have enjoyed(or should I use the word earned) free crypto (please stop Denying), Many have mined, Staked, Bought at the lowest of prices and so on. How can it be any good for the mass adoption when only a few (in comparison to the people around the world who are not yet into Crypto) have the crypto currency just because they are a bit early into the scene.
I've heard this argument before. The counterargument given was that early adopters were taking a bigger gamble on an (at the time) highly obscure and nascent technology. As such, they deserve to be rewarded for their foresight. They invested time and/or money on something that might have gone nowhere. In fact, due to the importance of network effects, if the early adopters
hadn't done what they did, you might not even be here to nitpick now.
Now, It's not that I'm against anything, But the real problem that no one seems to care about is how can the wealth be distributed equally among all so that people (irrespective of being late) enjoy all the benefits equally
Assuming you use Bitcoin the way it was intended to be used, everyone does gain the same benefits. The benefits are autonomy over your own wealth without having to rely on third parties. No one who can block or restrict your transactions. Noble as it might sound, I don't think equal distribution of wealth was on satoshi's todo list.