@hypermewer

I do believe that a strong mewing force is likely to induce more bone change. But this has to be a force where you can maintain it all the time as hard mewing for a few minutes wont do a lot. There are some good hard mewing results from some forum users however it is all anecdotal and nothing is scientifically proven yet. If the mewing community grows and hits mainstream then hopefully in a few years we can have some science on it. For now I recommend improving your body posture, lip seal, tongue posture with suction hold plus a reasonable force, and mandible posture.

This is one of the questions that was submitted to Mike this time around

Depends on what your goal is.  If it's to retrain your tongue posture, I think it can help strengthen your tongue.  If it's for maxilla upswing, recently people are starting to think that it's teeth in contact/chewing that moves the maxilla up rather than tongue pressure.

Posted by: @drunkwithcoffee

Depends on what your goal is.  If it's to retrain your tongue posture, I think it can help strengthen your tongue.  If it's for maxilla upswing, recently people are starting to think that it's teeth in contact/chewing that moves the maxilla up rather than tongue pressure.

Teeth contact and chewing seems to create more vertically short faced people with overbites. In my opinion this isn't the aesthetic effect many need considering that many people interested in mewing already have this type of face.

Where people think it causes upswing is where it doesn't happen. The alveolar ridge doesn't remodel nor does it move up. What happens is the molars are driven up and the maxilla rotates clockwise, which I have noticed most people doing mewing want the opposite of that. What does rotate counterclockwise from excessive chewing is the mandible. 

Posted by: @hypermewer

I would appreciate a honest and detailed answer about this controversial topic in the Mewing community...

People say things, sometimes contradictory things, and they say them with a lot of confidence too. But the proof of the pudding is in the eating, and few of the people offering opinions have actually given us proof that their ideas (with respect to "hard mewing") are right.[1]

Your best bet is to go through some old posts and make a judgment for yourself. Spend a while reading and let us know what you find. Remember that some people take better pictures than others -- and, unfortunately, self-taken photos in uncontrolled conditions are all we have to work with for now (edit: when it comes to the evidence for "hard mewing" specifically.)

[1] It's something that drives me away from this forum and /r/orthotropics, which could be good resources. Dogmatic thinking gets us nowhere and science is hard. What we need is less opining and more people experimenting and reporting results. Building a library of self-experiments will give us all a lodestar to follow.