I feel like justin looks at steemit as a mere website with some active users and doesnt care at all about steem (which might not be so bad considering his priority is more on increasing the total number of tron users).
Maybe he thought a considerable % of steem holders would happily give up their steem for a better version of steemit but read the comments and changed his mind. Maybe he couldnt care less anyways as long as steemit starts distributing tron tokens (with or without steem since its more like additional perks to him).
Its all speculation for now so who knows 😏