But you understand that this is just like, you opinion, man. While I don't doubt your anecdotal experience, I would suggest that you also have ample evidence from this thread that there are many people that appreciate this design choice. And it's not just for new players. FWIW, Champion is often played at my tables, whereas Battlemaster has never been played. In other words, my anecdote can beat up your anecdote (because it has a better crit range!).
I run different groups. I run a grognard group (former 1e players). I run a family group. And I run groups for kids/newbies. The Champion gets a lot of play in all of the different groups.
Again, if you don't like the Champion, that's fine! That's a preference. And if you have a houserule at your table, that's fine too! If it works out well, why not report back to us?