The only reason to use any of the exchange (centralized) is just because they served my needs and nothing went wrong. There are no passion, no love or anything else for any of these centralized exchanges. I filled up the form but it seems not all the questions and the answers are synced. When you are asking by addressing "them" it's really confusion who are them.
In other words, we should only use centralzied exchange for trading purpose and as soon as the trading is finished, the free up funds should be moved to the decentralzied wallet. No matter how good the exchnage is, there is also a risk of single point of failure and one can lose everything store in the centralized exchange as soon as the exchange go offline or disables withdrawal for whatever reason. We have withness the FTX exchange and after that we should be even more care.
I didn't fill up that google form as i do not feel any reaosn to do so. If the OP is looking to find any thing good in the centralzied exchnage for long term crypto holding, then i am afraid this is a wrong approach.