While I haven’t played the game yet and can’t vouch for anyone who has, I originally bought this game without voices (and please keep in mind that they also sell a voice patch if you wish to change your mind later on but I don’t know if that goes on sale at the same percentage off as the game FYI) and would do so again if the opportunity presented itself.
I had asked Sekai Project during one of their QA sessions when they still had their forum if they would consider or were going to be releasing other games without voices as an option. It’s likely that they didn’t want to commit to an answer there or that I wasn’t clear enough, but their response was essentially “We like to release our games with voices”. The feedback from Senjou No Maou may have been negative enough at the time, but looking back I should have asked again or for more clarification.
I don’t understand why people want less options for everyone, but it is apparently what happened.