Honestly, I've done maybe 80-100 unique installations of Windows 10, not counting those that have been done twice on the same system for one reason or another. In every case, except one (Where a dual OS boot was required) I have used the Microsoft media creation tool and have never experienced ANY of the complaints I see from some people about "it doesn't work" or "it won't download" or "I can't complete the media creation" or a few others.
In ALL those cases, I have to believe those people are simply, I won't say too stupid (Even though I just did), but challenged, or they have some other problem working against them, because myself and everybody else I have talked to regarding this issue have all never had any issues creating or installing using the Microsoft supplied media creation tool and then installing. Doesn't matter whether it's in legacy or UEFI mode, it still works fine.
Now, if it's a dual boot configuration, that's a different story and I agree you are going to need third party software usually. But mostly that doesn't tend to be the case, and is not (apparently) the case, in THIS case.
Nice to see that Rufus actually supports the official ISO now though.