Rebranding for marketing purposes is not “dumbing things down” it’s making things easier to understand for the common person. There is a difference. And yes, it does help people. There’s a reason government bills are written with common vocabulary and named with funny freedom sounding phrases. Most humans don’t like random acronyms with numbers to categorize topics and ideas.
Also, not every Ethereum user wants to know every single technical aspect of every update. They just want to know what the basic idea is. When news channels start talking about this update, you don’t want them calling it EIP-1559, that is obscure, it is meaningless to the public, and it keeps ETH as this mysterious tech voodoo.
Calling it something like “Transaction Fee Management” is clear, understandable, and gets the point across. If someone wants more technical details, they can find that on their own. EIP-1559 can still be the technical name for it, but we need a marketable name so the average user (not a developer) can understand what’s happening.