First, people form near-religious relationships with an editor-environment they are familiar with and use a lot ... even if they complain about it. Trying to address complaints by taking away "their" tool is a good way to lose your arm at the shoulder. (EMACS, VIM and Notepad are not only still around - they have aggressively vibrant communities ... because of this editor-phenomenon.)

Second, high-production writers like Jeff Chandler with a full-time work load, great subject-matter, and an assured audience ... still pay a price for the repetition, confinement and general burn-out. No one in Jeff's position should be without quality therapist-services. ;)

Low-end users have to pretty-much inform the decision on editor-policy. Skilled & successful operators have their resources to address or change things. High-end WordPress websites even have their own dedicated IT Dept. ... may well even provide custom external editing environments for each writer.

Indeed, the basic Update Welcome blurb has rather recently touted the improved & expanded role of TinyMCE, and a growing cast of supporting-actors for it. For the masses, what we see is what it is, and will be for the indefinite duration.