We are talking about adventurers who are doing adventurer things. If you did golf things for the past 60 years you surely would be better at said golf things.
Sure but wizards don't generally use longswords so they don't get better at them. You have option for ASI / feat to choose what you have been doing and improving as well as any skill you actually do can count toward training gaining said proficiency bonus... and done.
Why do you assume I don't have as much fun as others are having with said system?
We don't assume, we have seen your many posts!

lol jk
… in seriousness the point I believe @
jgsugden is making is if your happy under the current system then why talk about changing it? Kind of falls under the "if its not broke don't fix it" rule of life. Also, since they are functional to most people, its possible (but not by any means or even normally the case) that some one not enjoying this system is because your not playing in the play style that will bring you the most joy. So trying the multiple other approaches that are out there to see if there is a way of playing you will enjoy
more is not bad advice... however, it could also be a negative GM who values "His story" over everything else including player agency and "The Rule of cool". Even the perfect rules do not guarantee perfect play (I am not saying 5th Edition rules are perfect by any means) because each person at the table GM or player brings their own baggage, joy, and misery to share.
I can't say if your having fun or not, if your playing the best style for you, if your playing with people who will make the game fun for you, if you need to be proficient in all things because your GM will not let you do anything without it, and I am not saying we can't have different opinions on system mechanics. I mean we are hear to post about it so that seems kind of the point.
… My personal opinion is that I don't want to be proficient in all things or for my abilities to scale evenly. Your 1d4, Not Proficient, Proficient, and Expertise method looks to reflect that too. You want negative qualities, qualities you keep up with, and qualities you excel at so we are in agreement there. We differ is that I would prefer to not proficient the majority of things to highlight when I am proficient for greater separation of party roles and do distinguish Player characters more.Where you
appear to want to generally proficient in all things with a few deficiencies. This is just a perspective difference. I prefer the greater separation because it reduces toe stepping.