My opinion is that dynamax as a stat booster or even as an attacking move amplifier should not be banned. Yes, in comparison to other generations it is op. However, obviously the competition in gen 8 will be other dynamax, which is given for free. This is essentially a global power creep, and is such not inherently broken. The best abusers will be the best mons yes, but that's not necessarily bannable (if the best Earthquake abuser is the best mon, does that mean Earthquake is bannable?)
However, the Max Guard argument is a perfectly valid argument. The removal of viable use of status moves would be objectively detrimental, however we don't know the exact details of how this works.
However, the Max Guard argument is a perfectly valid argument. The removal of viable use of status moves would be objectively detrimental, however we don't know the exact details of how this works.