The way I see it is, if you believe segwit is safe, then you have a bet opened against MP and co, anyone with power that doesn't like segwit basically, and this includes Jihan btw. On a long enough timeline if these forces collude you could lose that bet and then you are fucked, meanwhile if one holds 1coins then your btc is safe, and if Core ends up winning your btc is also safe. This gives you an incentive to keep coins in 1addresses already. Also if you need to "convince people to keep money in segwit addresses" for segwit to be safe it just shows it can't be safe, it's actually insane if that's the case. I dont know the technical details on this but i've kept my coins in 1addresses since segwit went live because of intuition. Any upgrades in bitcoin will always be controversial by default for whatever reasons, meanwhile no one is going to be able to defend going against the original format because the main point of bitcoin is always backward compatibility so who the fuck would be against that without being seen as an enemy. Therefore the default place to be is 1adrs.