All this is ok but are our assets safe in crypto space as well? No that's not true the blockchains have failed to proved their security to the users and we have been seeing nowadays that they have been hacked on a large amount by hackers.
I'm the latest news a japani blockchain was hacked and millions worth BTc was stolen. So in order to make our assets safe who will assure us?
Depends on where you are keeping it, there are some very super safe ones, there are ones that are not that great at all. We should realize that things aren't all that black and white, you can't have one response to everything. Even in the case where one thing seems super safe, another day someone could figure out a way to hack into it, or something that back in the day got hacked into, may look dangerous but could go strong without any more hacking forever.
This is why I think it's quite important to realize that the best way to go would be just being careful and not putting it all in one place. If you can avoid that, then you are going to do fine and the results will come by itself. That's how you should approach it.