I'm not sure which comment you're referring to, but Laurent's comments there seem to be in favour of removing the shift+enter requirement, plus the fact that he opened the issue in the first place. The problem is there is no good solution for the issue using the current TinyMCE editor. We do have a new Rich Text Editor on mobile now which resolves the shift+enter issue, and will eventually be shared with desktop and replace TinyMCE, but there isn't any estimate at this point for when that will happen, because there needs to be full feature parity between the two editors implemented, before that can happen.
In the meantime, I saw somewhere that someone made a script (using autoit I think), to automate mapping shift+enter to enter when using Joplin.