Don't let the name fool you. TeXmacs won't make you write (La)TeX. You'll get tables that work, images that work, hyperlinks that work, running headers that work, math that works, kerning that words, hyphenation and justification that work. (From math forward are major failure points in Word)
This is a moot point if most people are reluctant to pick up latex and those who do are greeted by often unreadable, esoteric code that produces error messages such as "badness". This is the problem with latex and its derivatives, not their output.
Basically you get all the advantages of Word, all the advantages of (La)TeX, and none of the disadvantages of either.
The sad part of Word is that even professionals mess it up constantly, because you have many ways to reach the same goal, and that every addition affects the whole document, or in some fortunate cases only the part till the next page break. But silent breakage is the worst, as is quite clear from any kind of programming background. Imo, Word just doesn’t scale due to this.
Trust me, writing code is not the issue with latex. I've written C++ code for embedded MCUs. I've taught python to undergrads. The pain does not even compare.