Tatum on offense this year has been incredible, but as good as he's been I think you can make the argument he's still only ben the leagues like 6th best offensive player.
Steph, Jokic, Luka (crayz volume), AD, Durant all arguably have better offensive seasons right now. Even guys like SGA or Mitchell have put up similar numbers/efficiency. Tatum's MVP argument will be based off four key points:
1) He's close enough to those guys offensively.
2) He never misses games and plays a ton of minutes (Value in volume)
3) He's better defensively then the pure offense options like Steph, Luka, Jokic (Ie, two way guy)
4) His team win's 60+ games.
Celtics fans should take eveyr opportunity possible to hammer these points home.